(21+53+72)+0*2*21-(-2)*21=

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Solution for (21+53+72)+0*2*21-(-2)*21= equation:


(21+53+72)*2*21-(-2)*21=0

We simplify the equation to the form, which is simple to understand 
(21+53+72)*2*21-(-2)*21=0

Simplifying:
(21+53+72)*42-(-2)*21=0

Simplifying terms in parentheses
(+146)*42-(-2)*21=0

Remove unnecessary parentheses
+146*42-(-2)*21=0

Reorder the terms in parentheses
+146*42-(-42)=0

Remove unnecessary parentheses
+146*42+42=0

We move all terms containing  to the left and all other terms to the right. 
0=0-146-0-42-42

We simplify left and right side of the equation. 
0=-230

0=-230

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

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