30+(-42)=

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Solution for 30+(-42)= equation: 


Simplifying
30 + (-42) = 0
30 + -42 = 0

Combine like terms: 30 + -42 = -12
-12 = 0

Solving
-12 = 0

Couldn't find a variable to solve for.

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

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