2-7=-1

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Solution for 2-7=-1 equation:


2-7=-1

We simplify the equation to the form, which is simple to understand 
2-7=-1

We move all terms containing  to the left and all other terms to the right. 
0=-1-2+7

We simplify left and right side of the equation. 
0=+4

0=4

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

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