-20+(-22)+(-21)=

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Solution for -20+(-22)+(-21)= equation:


-20+(-22)+(-21)=0

We simplify the equation to the form, which is simple to understand 
-20+(-22)+(-21)=0

Remove unnecessary parentheses
-20-22+(-21+)=0

Remove unnecessary parentheses
-20-22-21=0

We move all terms containing  to the left and all other terms to the right. 
0=0+20+22+21

We simplify left and right side of the equation. 
0=+63

0=63

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

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