Question

c) 12x +14= 2x-17 +2

d) 18x +120= 8x – 180 + 20

Answer 1

c)

12x + 14= 2x - 17 + 2

12x - 2x= - 17 + 2 - 14

10x= - 29

x= - 29/10

d)

18x + 120= 8x - 180 + 20

18x - 8x= - 180 + 20 - 120

10x= - 280

x= - 280/10

x= - 28

Answer 2

Explicação passo-a-passo:

1) Resolva as expressões abaixo:

a)

a) 12x + 14 = 2x - 17 + 2

12x - 2x = - 17 + 2 - 14

10x = - 15 - 14

10x = - 29

x = - 29/10

x = - 2,9

b)

18x + 120 = 8x – 180 + 20

18x - 8x = - 180 + 20 - 120

10x = -160 - 120

10x = - 280

x = - 280/10

x = - 28