3(1+7r)-(8r+8)=-57

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Solution for 3(1+7r)-(8r+8)=-57 equation:


3(1+7r)-(8r+8)=-57

We simplify the equation to the form, which is simple to understand 
3(1+7r)-(8r+8)=-57

Reorder the terms in parentheses
+(+3+21r)-(8r+8)=-57

Remove unnecessary parentheses
+3+21r-(+8r+8+)=-57

Remove unnecessary parentheses
+3+21r-8r-8=-57

We move all terms containing r to the left and all other terms to the right. 
+21r-8r=-57-3+8

We simplify left and right side of the equation. 
+13r=-52

We divide both sides of the equation by 13 to get r. 
r=-4

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