5 + 1 / 4x = 1 / 2X-4 use the properties of equality to solve this problem

5 + 1 / 4x = 1 / 2X-4 use the properties of equality to solve this problem

5+1/4x=1/2x-4
1/2x-1/4x=5+4
1/4x=9
x=4×9
x=36

How to solve the equation x / 2-3 = 2X-4 with the properties of the equation

By subtracting X / 2 from both sides, we get - 3 = 3 / 2 * x - 4
Add 4 on both sides at the same time to get 3 / 2 * x = 1
Multiply both sides by 2 / 3 to get x = 2 / 3

To solve the equation. (1) 2x + 1 = 2-x; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; (2) 5-3 (x-1) = 3; (3) 2Y − 13 = y + 24 − 1; (4) y − y − 12 = 2 − y + 26

(1) The results show that: 3x = 1, x = 13; (2) 5-3x + 3 = 3, 3x = 5, x = 53; (3) 8y-4 = 3Y + 6-12, 5Y = - 2, y = - 25; (4) 6y-3y + 3 = 12-y-2, 4Y = 7, y = 74

3 × 1.7 + 4x = 9.9

3×1.7+4x=9.9
5.1+4x=9.9
4x=9.9-5.1
4x=4.8
x=1.2
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It is proved that the number 1 larger than the product of four continuous integers must be the square of a certain number

Let four numbers be a, a + 1, a + 2, a + 3
Then a (a + 1) (a + 2) (a + 3) + 1
=[a(a+3)][(a+1)(a+2)]+1
=(a^2+3a)[(a^2+3a)+2]+1
=(a^2+3a)^2+2(a^2+3a)+1
=(a^2+3a+1)^2
So it must be the square of some number

A passenger car and a freight car leave from a and B at the same time. The passenger car travels 60km per hour, and the freight car travels 1 / 10 of the whole journey per hour. When the freight car arrives at 13 / 24 of the whole journey, the passenger car travels 5 / 8 of the whole journey. How many km is the whole journey between a and B?

A. B the whole journey between the two places is:
13/24÷ 1/10×60÷ 5/8=65/12×60÷ 5/8=520

If m * n = m + 3N, solve the equation 3x * 4 = 2
The middle is not a multiplication sign

According to m * n = (M + 3n) △ 4,
3x*4=（3x+3×4)÷4,
So the original equation becomes (3x + 3 × 4) △ 4 = 2
3x+3×4=8
3x=-4
x=-4/3

What's the speed of cheetah?

According to the data, cheetah is the fastest animal on land, with an average speed of more than 90km / h and a maximum speed of 110km / h. However, its top speed can only be maintained for 3 to 4 minutes. Antelope is a long-distance champion, and it can run at a high speed of 90km / h for more than ten minutes, The cheetah can't catch up with the antelope in three minutes. Basically, it can only watch the dust and sigh
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How to solve an equation with two unknowns
(x + 70) divided by (7 / 3 + 70) = 4 / 7
It's better to give a reason

X=4/3
There seems to be only one unknown number

In a certain order: the earth, the sun, the moon, the universe, the solar system, the Milky way

From big to small: universe, galaxy, solar system, sun, earth, moon