Question

2×-4=6e3·(x-1)=x+7?​

Answer 1

Resposta:

a)

2x-4=6  ==>2x=6+4 ==>2x=10  ==>x=5

b)

3*(x-1)=x+7

3x-3=x+7

3x-x =3+7

2x=10

x=10/2=5