The solution equation of X-1 / 6-x + 1 / 1 = X-1 / 3

The solution equation of X-1 / 6-x + 1 / 1 = X-1 / 3

-1/6+1=x-1/3
5/6=x-2/6
x=7/6

Solve equation 4 (x + 2.5) / 3 = 24

4(x+2.5)/3=24
x+2.5=24÷4×3
x+2.5=18
x=18-2.5
x=15.5

How to list the simple formula of 4 × (78 × 25)?

4×（78×25）
=4×25×78
=100×78
=7800
Do not understand can ask, help please adopt, thank you!

-A radical - 3 / A

Greater than or equal to 0 under root sign
So - 3 / a > = 0
Then a

Fangfang borrowed a book from the library of the University. If she read 10 pages more than she planned, she could return it two days in advance. If she read 10 pages less than she planned, she would have to delay it four days. How many pages is the book? How many days does she plan to finish it?

Plan to look at page x every day, plan to look at day y
XY÷（X+10）=Y-2
XY÷(X-10)=Y+4
X=30,Y=8
A total of 240 Pages, plan to see 8 days

7 out of 8 times 7 + 3 out of 8 is 13 out of 2

How to write the composition "my scenery"?
Well, there is a composition competition in our province. Last time I won the third prize of the province. I don't want to disappoint the teacher. I chose "my scenery" as the title of this competition, but I can't do it. I need some help, such as writing a better topic (Essays are more enjoyable). I just need to put forward some opinions. I don't need a complete composition,
Alas, I indicated that I don't need a complete composition. Don't harm me. If the composition is found, I will be disqualified

In fact, a topic is about their own growth, writing inspirational, or how to write from ignorance to maturity, how to overcome a difficulty can also be, the center is to feel grown up, and finally highlight this is also a beautiful scenery, it is recommended to use narrative, prose is not easy to write, you can add some philosophical, lyrical sentences

Solution proportion
【1】3：x=9：18
【2】4.2：5.6=7：x
【3】 1 / 5:1 / 4 = x: 3 / 4
【4】x：2.4=5：3
(1) On the 1:6000000 scale map, the distance between a and B is 12cm. How many kilometers is the actual distance between a and B?

【1】3：x=9：18
9X = 54
X = 6
【2】4.2：5.6=7：x
4.2X = 5.6×7
X = 9 and 1 / 3
【3】 1 / 5:1 / 4 = x: 3 / 4
1/4X = 3/20
X = 3/5
【4】x：2.4=5：3
3X = 12
X = 4
(1) On the 1:6000000 scale map, the distance between a and B is 12cm. How many kilometers is the actual distance between a and B?
6000000 × 12 = 72000000 cm = 720 km

Solution equation: x-22% = 1.1

x-0.22=1.1
x=1.32

(3 and 3 / 11x35.7-3 and 3 / 11x26.69 + 18 / 55x19.9) x (2.5-5 / 12-7 / 36) simple operation

Original formula = (36 / 11x35.7-36 / 11x26.69 + 18 / 55x19.9) x (2.5-5 / 12-7 / 36)
=[36/11x(35.7-26.69)+18/55x19.9]x（2.5-5/12-7/36）
=（36/11×9.01+18/55x10×1.99）x（2.5-5/12-7/36）
=36/11×（9.01+1.99）x（2.5-5/12-7/36）
=36x（2.5-5/12-7/36）
=90-15-7=68