7(-3)-3(-3)=18

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Solution for 7(-3)-3(-3)=18 equation: 


Simplifying
7(-3) + -3(-3) = 18

Multiply 7 * -3
-21 + -3(-3) = 18

Multiply -3 * -3
-21 + 9 = 18

Combine like terms: -21 + 9 = -12
-12 = 18

Solving
-12 = 18

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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