Question

1-Resolva as equações a seguir:
a) – 3y – 135 = 745 – 8y
b) 12x + 40 (2 + x) = 7 (2x – 2) – 128

Answer 1

Resposta:

a)-3y+8y=745+135

5y=880

y=880/5

y=176

b)12×+80+40×=14×-14-128

52×-14×=-14-128-80

38×=-222

×=-222/38

×=-111/19