21+4(9-5)=

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Solution for 21+4(9-5)= equation: 


Simplifying
21 + 4(9 + -5) = 0

Combine like terms: 9 + -5 = 4
21 + 4(4) = 0

Multiply 4 * 4
21 + 16 = 0

Combine like terms: 21 + 16 = 37
37 = 0

Solving
37 = 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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