21=-(-6-3)

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Solution for 21=-(-6-3) equation:


Simplifying
21 = -1(-6 + -3)

Combine like terms: -6 + -3 = -9
21 = -1(-9)

Multiply -1 * -9
21 = 9

Solving
21 = 9

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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