Question

resolva: a) x-3=5 b) x + 2 = 7 c) x/3 + x/2 = 15 d) x - 7 = -7

Answer 1

Resposta:

a) x = 8

b) x = 5

c) x = 18

d) x = 0

Explicação passo-a-passo:

a)

x - 3 = 5

x = 5 + 3

x = 8

b)

x + 2 = 7

x = 7 - 2

x = 5

c)

x/3 + x/2 = 15

[2x + 3x]/6 = 90/6

[2x + 3x]/6 = 90/6

2x + 3x = 90

5x = 90

x = 90/5

x = 18

d)

x - 7 = - 7

x = - 7 + 7

x = 0