Question

alguien me ayuda???? Por favor ​

Answer 1

Explicación paso a paso:

Prob 01.

4x - 3 = x + 12

3x = 15

x = 5

Prob 02.

2x - 7 = - 3

2x = 4

x = 2

Prob 03.

8x - 20 = 3x + 15

5x = 35

x = 7

Prob 04.

5x + 1 + 7 - x = 0

4x = -8

x = -2