Question

4) Resolva as equações:

a) x + 10 = 0

b) x - 25 = 8

c) 5x + 7 = 3x + 17

d) - 6 + 10x = 5x + 24​

Answer 1

Resposta:

a) -10

b) 33

c) 5

d) 6

Explicação passo-a-passo:

a) x + 10 = 0

a.1) x = 0 - 10

a.2) x = -10

b) x - 25 = 8

b.1) x = 8 + 25

b.2) x = 33

c) 5x + 7 = 3x + 17

c.1) 5x = 3x + 17 - 7

c.2) 5x - 3x = 17 - 7

c.3) 2x = 10

c.4) x = 10/2

c.5) x = 5

d) - 6 + 10x = 5x + 24​

d.1) 10x = 5x + 24 + 6

d.2) 10x - 5x = 30

d.3) 5x = 30

d.4) x = 30/5

d.5) x = 6