7(7)-18=21+4(7)

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Solution for 7(7)-18=21+4(7) equation: 


Simplifying
7(7) + -18 = 21 + 4(7)

Multiply 7 * 7
49 + -18 = 21 + 4(7)

Combine like terms: 49 + -18 = 31
31 = 21 + 4(7)

Multiply 4 * 7
31 = 21 + 28

Combine like terms: 21 + 28 = 49
31 = 49

Solving
31 = 49

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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