(9(-7))-(7(4))=

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Solution for (9(-7))-(7(4))= equation: 


Simplifying
(9(-7)) + -1(7(4)) = 0

Multiply 9 * -7
(-63) + -1(7(4)) = 0
-63 + -1(7(4)) = 0

Multiply 7 * 4
-63 + -1(28) = 0

Multiply -1 * 28
-63 + -28 = 0

Combine like terms: -63 + -28 = -91
-91 = 0

Solving
-91 = 0

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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