3x-(3x+7)=-9

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


Simplifying
3x + -1(3x + 7) = -9

Reorder the terms:
3x + -1(7 + 3x) = -9
3x + (7 * -1 + 3x * -1) = -9
3x + (-7 + -3x) = -9

Reorder the terms:
-7 + 3x + -3x = -9

Combine like terms: 3x + -3x = 0
-7 + 0 = -9
-7 = -9

Solving
-7 = -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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