Question

Resolva as equações a seguir:

a) 2( x - 4 ) = 3(2x - 5)

b) x / 5 + 3 = -2x

Answer 1

Resposta:

a) 2(x-4) = 3(2x-5)

2x - 8 = 6x - 15

2x - 6x = -15 + 8

-4x = -7

x = 7/4

b) x/5 + 3 = -2x

x + 15 = -10x

x + 10x = -15

11x = -15

x = - 15/11