Question

1)resolva:
A)2x+6=7-x
B)3.(x-4)=16-x
E)6(-x+3)-4(-x-8)=10

Answer 1

Resposta:

a)x=1

b)x=7

c)x=20

Explicação passo-a-passo:

a)2x+6=7+x

2x-x=7-6

1x=1

b)3.(x-4)=16-x

3x-12=16-x

4x=16+12

4x=28

x=28:4

x=7

c)6(-x+3)-4(-x-8)=10

-6x+18=(4x-32)=10

-6x+18+4x-32=10

-2x=10-18+32

2x=40

x=20