Question

4)Resolva as equações: a) 2x + 4 + x = x – 2 b) 4(x - 3) = 2x + 1

Answer 1

Resposta:

A) 2x + 4 + x = x – 2

2x+4=-2

2x=-2-4

2x=-6

x=-3

B)4(x - 3) = 2x + 1

4x-12=2x+1

4x-2x-12=1

4x-2x=1+12

2x=13

x=13/2=6,5