6-2(9+3)=7

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Solution for 6-2(9+3)=7 equation: 


Simplifying
6 + -2(9 + 3) = 7

Combine like terms: 9 + 3 = 12
6 + -2(12) = 7

Multiply -2 * 12
6 + -24 = 7

Combine like terms: 6 + -24 = -18
-18 = 7

Solving
-18 = 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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