-2x-21=-2x+21

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Solution for -2x-21=-2x+21 equation:


-2x-21=-2x+21

We simplify the equation to the form, which is simple to understand 
-2x-21=-2x+21

We move all terms containing x to the left and all other terms to the right. 
-2x+2x=+21+21

We simplify left and right side of the equation. 
0x=+42

0=42

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

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