-30-10=-40

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Solution for -30-10=-40 equation: 


Simplifying
-30 + -10 = -40

Combine like terms: -30 + -10 = -40
-40 = -40

Add '40' to each side of the equation.
-40 + 40 = -40 + 40

Combine like terms: -40 + 40 = 0
0 = -40 + 40

Combine like terms: -40 + 40 = 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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