Question

Ajuda!

ache o valor de x

e) 4x +12 = -3x -16

f) 6x +15 = 4x -9

g) -3 ( -x +4) = 36

Answer 1

E:4x+12=-3x-16
4x+3x=-16-12
7x=+28
x=28/7= 3,13

f:6x+15=4x-9
6x-4x=-9-15
x=24/2=12

g:-3(-x+4)=36
3x-12=36
3x=36+12
x=48/3=16