7=7(-7-4)

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Solution for 7=7(-7-4) equation: 


Simplifying
7 = 7(-7 + -4)

Combine like terms: -7 + -4 = -11
7 = 7(-11)

Multiply 7 * -11
7 = -77

Solving
7 = -77

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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