So you distribute 4 into the parentheses. So 4x-4 and then you add on a +10. Then you do -4+10 which equals positive 6. So you are left with 4x+6. And if you needed to solve it you would then put =0 at the end and then subtract 6 on both sides and you'd get 4x=-6 and then you divide by four on both sides and you get x=-6/4 which simplifies to x=-3/2