If a and B are opposite numbers, and ab is not equal to 0, then a / b=_____ Why?

If a and B are opposite numbers, and ab is not equal to 0, then a / b=_____ Why?

∵ A and B are opposite to each other
∴ a + b = 0
∴ a = - b
∵ a b ≠ 0
∴ a / b = - b / b = - 1

If AB is not equal to 0, then the opposite number of a in a + the opposite number of B in B=

The opposite number of a in a + the opposite number of B in B = - 2

7x (1 / 4-1 / 7)

7x (1 / 4-1 / 7)
=7×(3/28)
=¾

How to solve x-3 / 7X = 12?

4/7x=12
x=12*7/4
x=21

How to solve 7x-x ^ = 12
Buried love happiness, how wrong

7x-x²=12
x²-7x+12=0
(x-3)(x-4)=0
x1=3,x2=4

(4 / 7x-12) + 3 / 2 (4 / 7x-12) = x

(4/7x-12）+3/2(4/7X-12)=X
Then 5 / 2 (4 / 7x-12) = X
Then 4 / 7x-12 = 2 / 5x
Then 20x-12 * 5 * 7 = 14x
Then 6x = 12 * 5 * 7
Then x = 70

How to solve (54 + x) / (12 + x) = 7x

54+x=7x*(12+x)
54+x=84x+7x^2
7x^2+83x-54=0
The △ of the equation is obviously greater than 0 and has two unequal roots
Then forget it!
Note that x is not equal to - 12

How to solve (x + 24) + X + (x / 2 + 12) = 7x

The results are as follows
9/2x=36
9x=72
x=8

How to solve 7x-3 = 2 (x + 6)

7x-3=2x+12
7x-2x=12+3
5x=15
x=15/5
x=3

How to solve x ^ 3-7x + 6 = 0?

x^3-x^2+x^2-7x+6=0
x^2·(x-1)+(x-1)(x-6)=0
(x-1)·(x^2+x-6)=0
(x-1)·(x-2)·(x+3)=0
So the equation has three solutions
x=1、x=2、x=-3