-5х+9(-1+2х)=9х-1 ДАЮ 10 баллов!!!!!!!!!!!

Question

-5х+9(-1+2х)=9х-1 ДАЮ 10 баллов!!!!!!!!!!!

Answer 1

-5х + 9 (-1 + 2х) = 9х - 1

-5х - 9 + 18х = 9х - 1

-5х + 18х - 9х= 9 - 1

4х = 8

х = 8 / 4

х = 2