18-5(1+2)=

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Solution for 18-5(1+2)= equation: 


Simplifying
18 + -5(1 + 2) = 0

Combine like terms: 1 + 2 = 3
18 + -5(3) = 0

Multiply -5 * 3
18 + -15 = 0

Combine like terms: 18 + -15 = 3
3 = 0

Solving
3 = 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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