-20+(-89)+112+9=

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Solution for -20+(-89)+112+9= equation:


-20+(-89)+112+9=0

We simplify the equation to the form, which is simple to understand 
-20+(-89)+112+9=0

Remove unnecessary parentheses
-20-89+112+9=0

We move all terms containing  to the left and all other terms to the right. 
0=0+20+89-112-9

We simplify left and right side of the equation. 
0=-12

0=-12

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

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