Question

найдите корень уравнения -5х+9 (-1+2х)=9х-1

Answer 1

-5x+9(-1+2x)=9x-1
-5x-9+18x=9x-1
-5x+18x-9x=-1+9
4x=8
x=2

Answer 2

-5х-9+18х=9х-1
-5х+18х-9х= -1+9
4х=8
х=8:4
х=2