Question

qual ea resposta da equaçao 20X-30=40+30-20?

Answer 1

20x=40+30+30
20x=100
    x=100/20=5

Answer 2

20x-30=40+30-20 20x-30=70-20 20x-30=50 20x=50+30 20x=80 x=80/20 x=4 Acredito que seja assim