21=3-6(7)

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Solution for 21=3-6(7) equation: 


Simplifying
21 = 3 + -6(7)

Multiply -6 * 7
21 = 3 + -42

Combine like terms: 3 + -42 = -39
21 = -39

Solving
21 = -39

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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