Question

conta e resposta das que puderem : OBS coloca a letra da pergunta pfv

Answer 1

L)
{x=y-9
{x=y=79

2y-9=79
2y=79+9
y=88/2
y=44

Answer 2

3-a)
18x-43= 65
18x= 65+43
18x= 108
x= 108/18
x= 6

b)
23x-16= 14-17x
23x+17x= 14+16
40x= 30
x= 30/40
x= 0,75