21(5+-4)=7

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Solution for 21(5+-4)=7 equation: 


Simplifying
21(5 + -4) = 7

Combine like terms: 5 + -4 = 1
21(1) = 7

Multiply 21 * 1
21 = 7

Solving
21 = 7

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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