13=-7

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Solution for 13=-7 equation:


13=-7

We simplify the equation to the form, which is simple to understand 
13=-7

We move all terms containing  to the left and all other terms to the right. 
0=-7-13

We simplify left and right side of the equation. 
0=-20

0=-20

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

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