3x + 8 = 9 + 4x :First, subtract the 8 over to the right
3x = 1 + 4x :Then, subtract the 4x over to the left
-x = 1 :Then, divide the whole equation by the -1 attached to the x
<em><u>x = -1</u></em>
Solve x by simplifying both sides of the equation, then isolating the variable.
Answer:
x= - 31/2
The greatest common factor is 1
