40+9-30+2=

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Solution for 40+9-30+2= equation: 


Simplifying
40 + 9 + -30 + 2 = 0

Combine like terms: 40 + 9 = 49
49 + -30 + 2 = 0

Combine like terms: 49 + -30 = 19
19 + 2 = 0

Combine like terms: 19 + 2 = 21
21 = 0

Solving
21 = 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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