78 solve for x, with variables on both sides of equation. (note: x is the same thing as 1x) you must show your work! 9x = x + 4

9x= x+4

Subtract x on both sides to balance the equation. 

8x= 4

Divide 8 into both sides. (the inverse of multiplication) 

x= 1/2

We can check this by plugging in x.

9(.5)= .5+4

4.5= 4.5

I hope this helps!
~kaikers