90=2(90)-18

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Solution for 90=2(90)-18 equation: 


Simplifying
90 = 2(90) + -18

Multiply 2 * 90
90 = 180 + -18

Combine like terms: 180 + -18 = 162
90 = 162

Solving
90 = 162

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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