Question

Resolva as equações abaixo. a) 2b – 60 = - b b) 50c – 2 = 48c + 3 c) 4 . (x + 8) = 0 d) 2x – 3 = x + 5

Answer 1

→ Cálculo :

A) 2b – 60 = -b

2b + b = 60

3b = 60

b = 60 ÷ 3

b = 20

B) 50c - 2 = 48c + 3

50c - 48c = 3 + 2

2c = 5

c = 5/2

C) 4 . (x + 8) = 0

4x + 32 = 0

4x = 0 - 32

4x = -32

x = -32 ÷ 4

x = -8

D) 2x - 3 = x + 5

2x - x = 5 + 3

x = 8

Answer 2

Resposta:

a) b = 20 b) c = 2,5 c) x = 8 d) x = 8

Explicação passo-a-passo:

a) 2b – 60 = - b

2b + b = 60

3b = 60

b = 60/3

b = 20

b) 50c – 2 = 48c + 3

50c -48c = 2 + 3

2c = 5

c = 5/2

c = 2,5

c) 4 . (x + 8) = 0

4x + 32 = 0

4x = 0 - 32

x = -32/-4

x = 8

d) 2x – 3 = x + 5

2x - x = 5 + 3

x = 8

Bons estudos!