Question

Resolva as equaçoes

a)2(x+3)-x-9=0

b)2(x+4)+3(6+2x)=74

Answer 1

Aplique a propriedade distributiva.

a)

2(x+3)-x-9=0

2x+6-x-9=0

2x-x=0+9-6

1x=3

x=3/1

x=3

b)

2(x+4)+3(6+2x)=74

2x+8+18+6x=74

2x+6x=74-8-18

8x=48

x=48/8

x=6