Question

x + 12 = 5
3 x = 12
x - 9 = 5
2 x = 4

Answer 1

Respuesta:

1 ) x + 12 = 5

x = 5 - 12

x = - 7

2) 3x = 12

3x ÷ 3 = 12 ÷ 3

x = 4

3) x - 9 =5

x=5 + 9

x=14

4) 2x=4

2x ÷ 2 = 4 ÷ 2

x = 2

Espero que te sirva .