Question

Qual a resposta de 3x+20=5x-40

Answer 1

3x+20=5x-40
3x-5x=-40-20
-2x=-60
2x=60
x=60/2
x=30

Answer 2

3x+20=5x-40
20+40=5x-3x
60=2x
x=60/2
x=30