What is the meaning of "Ju" in the word "Ju Mu matchless"

What is the meaning of "Ju" in the word "Ju Mu matchless"

Look up: look up. Look up, you can't see a relative
It refers to being single, unfamiliar, lonely and wandering around

A simple method to calculate and solve the equation
Simple: 102 ^ 2
10.5 times 9.5
2.39 by 91 + 156 by 2.39-2.39 by 47
Solution equation: [2a-3] ^ 2 = [2A + 1] [2a-1] - 2

（1）102^2
=（100+2）²
=100²+2*2*100+2²
=10000+400+4
=10404
(2) 10.5 times 9.5
=（10+0.5）*（10-0.5）
=10²-0.5²
=100-0.25
=99.75
(3) 2.39 by 91 + 156 by 2.39-2.39 by 47
=2.39*（91+156-47）
=2.39*200=478
【2a-3】^2=【2a+1】【2a-1】-2
4A & # 178; - 12a + 9 = 4A & # 178; - 1-2
4a²-4a²-12a=-3-9
-12a=-12
So the solution of this equation is: a = 1

Mathematical calculation problem: help me to solve this problem with merging similar terms and solving equations,
Question 1: (- 2 / 3) x27 / 8 ÷ (3 / 2) &;
Question 2: 4x = 20 / 3 + 16
Question 3: - 2 / 1 (5mn-2m & # 178; + 3N & # 178;) + (- 3 / 2Mn + 2m & # 178; + n / 2 & # 178;)
Question 4: X-7 / 4-5x + 8 / 3 = 1

Guo Dunyong answers: these questions belong to the basic concept training questions, for this kind of questions, after clarifying the basic concept, you can master them as soon as possible through practice

Make sure you score. It doesn't matter if it's difficult
Three will do

2/3x+1/2x=42
3/4x=3/10
1/3x+1/6x=12

For example, 2 / 5 plus 3x equals 4 of the two symbols of the equation. 75, the more the better!

3X+5X=48 14X-8X=12 6*5+2X=44
20X-50=50 28+6X=88 32-22X=10
24-3X=3 10X*（5+1）=60 99X=100-X
X+3=18 X-6=12 56-2X=20
4y+2=6 x+32=76 3x+6=18
16+8x=40 2x-8=8 4x-3*9=29
8x-3x=105 x-6*5=42 x+5=7
2x+3=10 12x-9x=9 6x+18=48
56x-50x=30 5x=15 78-5x=28
32y-29=3 5x+5=15 89x-9=80
100-20x=20 55x-25x=60 76y-75=1
23y-23=23 4x-20=0 80y+20=100
53x-90=16 2x+9x=11 12y-12=24
80+5x=100 7x-8=6 65x+35=100
19y+y=40 25-5x=15 79y+y=80
42x+28x=140 3x-1=8 90y-90=90
80y-90=70 78y+2y=160 88-x=80
9-4x=1 20x=40 65y-30=100
51y-y=100 85y+1=-86 45x-50=40
χ×2/3=75 χ×4/15=8 7χ÷1/2=3/5 9/8÷χ=1/4
χ×5/8=1/12 χ×8=4/5 χ×5/4=5/8 χ×3/5=45
χ×2/3=75 χ×4/15=8 7χ÷1/2=3/5 9/8÷χ=1/4
χ×5/8=1/12 χ×8=4/5 χ×5/4=5/8 χ×3/5=45

159 * (3535 / 5353) - 105 and 103 / 104
9999*1111+3333*6666
1/（2*5）+1/（5*8）+1/（8*11）+1/（11*14）+1/（14*17）+1/（17*20）
7285 * (12 and 7 / 8) + 2742 * 128.75

159*（353535/535353）-(105+103/104)
=159*（35*10101/53*10101）-(105+103/104)
=105-105-103/104
=-103/104
9999*1111+3333*6666
=9999*1111+3333*3*2222
=9999*(1111+2222)
=(10000-1)*3333
=33326667
1/（2*5）+1/（5*8）+1/（8*11）+1/（11*14）+1/（14*17）+1/（17*20）
=(1/3)*(1/2-1/5+1/5-1/8+1/8-1/11+1/11-1/14+1/14-1/17+1/17-1/20)
=(1/3)*(1/2-1/20)
=(1/3)*(9/20)
=3/20
7285*（12+7/8）+2742*128.75
=7285*(103/8)+2742*(515/4)
=7285*(103/8)+2742*(1030/8)
=(7285+2742*10)*(103/8)
=(7285+27420)*(103/8)
=34705*103/8
=3574615/8

A few practical problems (primary school) are very simple
A and B are equal. If a is reduced by 10 and B is reduced by 22, then what a has left is four times that of B. how much is the original sum of a and B?
The sum of five consecutive natural numbers is 60. What are the five natural numbers?
How to measure the thickness of a piece of paper?
When Xiao Liu is doing a subtraction, he takes the subtracted 2.6 as 26, and the result is 23. What's the correct result?
In a subtraction arithmetic, the sum of the subtracted, the subtracted and the difference is 46, and the known difference is 13. So how much is the subtraction?

1)8
2)10,11,12,13,14,15
3) Measure the thickness of 200 sheets of white paper and divide by 200
4）26+23.6-2.6=47
5)9.4

Lily, Dandan and Dongdong weigh themselves together. The aunt who weighs them intentionally tests them: "lily and Dandan weigh a total of 110 kg, Dandan and Dongdong weigh a total of 130 kg. You can calculate the weight by yourself." can you work out the total weight of the three of them?
Negligence, Lily and Dandan weigh 110 kg, Dandan and Dongdong 120 kg, Lily and Dongdong 130 kg

Lily + Dandan = 110g
Dandan + Dongdong = 120 kg
Lily + Dongdong = 130 kg
Lily + Dandan + Dongdong = (110 + 120 + 130) / 2 = 180 (kg)

The 2010 World Expo will be held in Shanghai, China. Tickets from January to April 2010 are designated tickets, 190 yuan. Weekday tickets are 40 yuan cheaper than designated tickets. Xiao Li bought 1050 yuan of weekday tickets. How many tickets did her family buy
The design principle of cable-stayed bridge is ()

I bought x tickets on weekdays
(190-40) times × = 1050
×=7
The design principle is
Cable stayed bridge is composed of pylon, main girder and stay cable
The main bearing capacity of a bridge is not the car or train on it, but the road itself, which we see
Let's take a cable tower as an example. There are symmetrical stay cables on both sides of the tower, and the main beams of the tower are connected together by stay cables,
The two stay cables are subjected to the gravity action of the main girder, which produces two symmetrical pulling forces along the stay cable direction to the cable tower. According to the force analysis, the left force can be decomposed into a horizontal left force and a vertical down force; the same right force can be decomposed into a horizontal right force and a vertical down force; because these two forces are symmetrical, the left force can be decomposed into a horizontal right force and a vertical down force, So the horizontal left force and the horizontal right force cancel each other out,
Finally, the gravity of the main girder becomes two vertical downward forces on the pylon, so that the forces are transmitted to the piers under the pylon
No matter how many stay cables there are, the reason is the same. The reason why there are many stay cables is to disperse the force from the main girder

A very simple calculation problem,
163 and 1 / 13 △ 1 / 39 =?
163 and 1 / 13 △ 41 and 1 / 39 =?
Sorry, the typing is missing!

Original formula = (164-12 / 13) / (41 + 1 / 39)
=(164-12/13)*39/(41*39+1)
=(4*41*39-12*3)/[(40+1)(40-1)+1]
=[4*(40+1)(40-1)-36]/(1600-1+1)
=[4*(1600-1)-36]/1600
=(4*1600-40)/1600
=4-1/40
=3.975