-8(7+4r)=21

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Solution for -8(7+4r)=21 equation:


-8(7+4r)=21

We simplify the equation to the form, which is simple to understand 
-8(7+4r)=21

Reorder the terms in parentheses
+(-56-32r)=21

Remove unnecessary parentheses
-56-32r=+21

We move all terms containing r to the left and all other terms to the right. 
-32r=+21+56

We simplify left and right side of the equation. 
-32r=+77

We divide both sides of the equation by -32 to get r. 
r=-2.40625

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