Question

Aplicar a propriedade distributiva:
10x-20(x-1)=40-30(x-2)

Answer 1

10x - 20(x - 1) = 40 - 30(x - 2)
10x - 20x + 20 = 40 - 30x + 60
-10x + 20 = 100 - 30x
-10x + 30x = 100 - 20
20x = 80
x = 80 / 20
x = 4

Answer 2

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

10x - ( 20x - 20) = 40 - (30x - 60)

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

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

20x = 80

x = 80/20      x = 4