Question

Resolva as equacoes



a) 4.(x-5)=2 (x+2)-12




b)3.(x-2)-5x=5-2 (3x-3)

Answer 1

a) 4 (x - 5) = 2 (x + 2) - 12

4x - 20 = 2x + 4 - 12
4x - 2x = 4 - 12 + 20
2x = 12
x = 12/2
x = 6 ==> Resposta



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

3x - 6 - 5x = 5 - 6x + 6
3x - 5x + 6x = 5 + 6 + 6
4x = 17
x = 17/4. ==> Resposta

Answer 2

a) 4.(x-5)=2 (x+2)-12
4x-20=2x+4-12
4x-2x= - 12+4+20
2x=12
X=12/2
x=6

b)3.(x-2)-5x=5-2 (3x-3)
3x-6-5x=5-6x+6
3x-5x+6x=5+6+6
4x=17
x=17/4

Um abraço.