Bantu Dong kak, ini gimana yah?

-1 + 9x = -x + 4
9x + x = 4 + 1
10x = 5
x = 5 / 10
x = 1 / 2

4x - 6
4(1/2) - 6
2 - 6
-4 (D)

Semoga membantu....^^

-1+9x=-x+4
9x+x=4+1
10x=5
X=10/5
X=2

=4x-6
=4.2-6
=8-6=2