-20=-4+7

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Solution for -20=-4+7 equation:


-20=-4+7

We simplify the equation to the form, which is simple to understand 
-20=-4+7

We move all terms containing  to the left and all other terms to the right. 
0=-4+7+20

We simplify left and right side of the equation. 
0=+23

0=23

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

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