Question

Resolva a equação do 1° grau: a)5.(x + 3) – x = 24 + x b) 9x + 75 = 34 -2x + 25

Answer 1

Resposta:

a) 5 . (x + 3) – x = 24 + x

5x + 15 - x = 24 + x

5x - x - x = 24 - 15

5x - 2x = 9

3x = 9

x = 9 / 3

x = 3

b) 9x + 75 = 34 -2x + 25

9x + 2x = 34 + 25 - 75

11x = 59 - 75

11x = 16

x = 16 / 11

x = 1, 45