Question

12) Resolva as equações abaixo.
a) 2x + 3 - (2-x) = 5x + 3
b) 3(x - 1) = 2(x + 3)​

Answer 1

a)

2x + 3 - (2 - x) = 5x + 3

2x + 3 - 2 + x = 5x + 3

5x - 3x = 1 - 3

2x = - 2

x = - 2/2

x = - 1

b)

3(x - 1) = 2(x + 3)

3x - 3 = 2x + 6

3x - 2x = 6 + 3

x = 9

Resposta:

a) x = - 1

b) x = 9