Question 1015451
.
9-4x=1-2(x-7)
9-4x=1-2x+14
9-4x=15-2x
-2x=8
x=-3
.
CHECK:
9-4x=1-2(x-7)
9-4(-3)=1-2(-3-7)
9-(-12)=1-2(-10)
9+12=1-(-20)
21=1+20
21=21