Question

Resolva as equações:
a) 3x –2 ( 4x – 3 ) = 2 – 3( x – 1)
b) 3( x– 1) – ( x – 3) + 5 ( x – 2) = 18

Answer 1

Resposta:

a) 3x -8x +6 = 2 -3x +3

3x -8x +3x= 2 +3 -6

-2x = -1 (-1)

x=1/2

b) 3x-3 +x+3+5x-10 =18

3x +x +5x =18 +3 +10 -3

9x = 28

x = 28/9