Question

resolva 4x ( 3x- 5) - x (4x-3)

Answer 1

multiplica por eles mesmo e no final dividi

Answer 2

4x(3x- 5) -x(4x-3)
12x- 20-4x-3x
12x-4x-3x=20
8x-3x=20
5x=20
x=20/5
x=4