1/8(8c+16)-1/3(6+3c)=-2

Solution for 1/8(8c+16)-1/3(6+3c)=-2 equation:

1/8(8c+16)-1/3(6+3c)=-2

We simplify the equation to the form, which is simple to understand 
1/8(8c+16)-1/3(6+3c)=-2

Reorder the terms in parentheses
+(+1c+2)-0.33333333333333*(6+3c)=-2

Remove unnecessary parentheses
+1c+2-0.33333333333333+*(+6+3c+)=-2

Reorder the terms in parentheses
+1c+2+(-2-1c)=-2

Remove unnecessary parentheses
+1c+2-2-1c=-2

We move all terms containing c to the left and all other terms to the right. 
+1c-1c=-2-2+2

We simplify left and right side of the equation. 
c=-2

0=-2

The left and right sides are not equal, therefore there is no solution. This equation is invalid.