-2(20-5r)=10r-40

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Solution for -2(20-5r)=10r-40 equation:


-2(20-5r)=10r-40

We simplify the equation to the form, which is simple to understand 
-2(20-5r)=10r-40

Reorder the terms in parentheses
+(-40+10r)=10r-40

Remove unnecessary parentheses
-40+10r=+10r-40

We move all terms containing r to the left and all other terms to the right. 
+10r-10r=-40+40

We simplify left and right side of the equation. 
r=0

0=0

This equation is an identity, so all real numbers are solutions.

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