Question

Resolva cada equação a seguir considerando U = Z.
a) 3x + 2 = 2x - 11 b) 5.(3x - 2) = 2.(6x + 3)

Answer 1

A)
3x+2=2x-11
3x-2x=-11-2
x=-13

B)
5.(3x-2)=2.(6x+3)
15x-10=12x+6
15x-12x=6+10
3x=16
x=16/3