(6-x)/2=4
x2 x2 multiply both sides by 2
6-x=8
-6 -6 subtract 6 on both sides
-x=2
/-x /-x divide by -x to get positive x
x=-2
--or--
6-(x/2)=4
-6 -6 subtract 6 on both sides
-x/2=-2
x2 x2 multiply 2 on both sides
-x =-4
/-x /-x divide by -x to get positive x
x =4