Question

12(x+8)-x=20+x

4(x+3)-x=24+x

8x+12=34

Answer 1

Resposta:

-76/10 ou 0,76

6

2,75

Explicação passo-a-passo:

12(X+8) - X=20+X

12X + 96 - X = 20 + X

12 -X  -X = 20 -96

10X= -76

X= -76/10

X= 0,76

4(X+3) - X = 24+X

4X + 12 - X = 24 +X

4X - X -X = 24 - 12

2 = 12

X= 12/2

X=6

8X + 12 =34

8X=34 - 12

8X= 22

X=22/8

X= 2,75