Question

1)Calcule o valor de x:

A)3x+12=x-4=
B)5x=2x-15=

Answer 1

A)3X+12=X-4

3X-X=-4-12

2X=-16

X=-16/2

X=-8

B)5X=2X-15

5X-2X=-15

3X=-15

X=-15/3

X=-5