-7+-2=-8-1

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Solution for -7+-2=-8-1 equation: 


Simplifying
-7 + -2 = -8 + -1

Combine like terms: -7 + -2 = -9
-9 = -8 + -1

Combine like terms: -8 + -1 = -9
-9 = -9

Add '9' to each side of the equation.
-9 + 9 = -9 + 9

Combine like terms: -9 + 9 = 0
0 = -9 + 9

Combine like terms: -9 + 9 = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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