Answer:
-5.5
Step-by-step explanation:
-6x + 9 = 4(5 - x)
first multiply 4 by both 5 and -x
-6x + 9 = 20 + -4x
then move the x's to one side
-6x + 4x + 9 = 20
then move 9 to the 20 side
-6x + 4x = 20 - 9
then total both sides
-2x = 11
and divide by -2 so x is by itself
x = -5.5