21-1*2+5-3-9=15

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Solution for 21-1*2+5-3-9=15 equation: 


Simplifying
21 + -1 * 2 + 5 + -3 + -9 = 15

Multiply -1 * 2
21 + -2 + 5 + -3 + -9 = 15

Combine like terms: 21 + -2 = 19
19 + 5 + -3 + -9 = 15

Combine like terms: 19 + 5 = 24
24 + -3 + -9 = 15

Combine like terms: 24 + -3 = 21
21 + -9 = 15

Combine like terms: 21 + -9 = 12
12 = 15

Solving
12 = 15

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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