Question 55979
I got x=3.



{{{(1/5)*(10x-15)=(1/4)*(8-4x)+4}}}
{{{2x - 3 = 2 - x +4}}}
{{{2x-3 = 6 -x}}}


Add +x to each side, then +3 to each side to get all the variables on the left side and the numbers on the right.  That gives you 
3x=9
x=3


R^2 at SCC