Question

10 x - 20 ( x - 1 ) = 40 - 30 ( x - 2 )

Answer 1

10x-20x+20=40-30x+60

10x-20x+30x=40+60-20

20x=80

X=80÷20

X=4

Answer 2

Espero ajudar! :)

Explicação passo-a-passo:

10 x - 20 ( x - 1 ) = 40 - 30 ( x - 2 )

10 x - 20x + 20 = 40 - 30x + 60

10x - 20x + 30x = 40 + 60 - 20

20x = 80

x = 80 / 20

x= 4