6.7+u=-15(2)+u

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Solution for 6.7+u=-15(2)+u equation: 


Simplifying
6.7 + u = -15(2) + u

Multiply -15 * 2
6.7 + u = -30 + u

Add '-1u' to each side of the equation.
6.7 + u + -1u = -30 + u + -1u

Combine like terms: u + -1u = 0
6.7 + 0 = -30 + u + -1u
6.7 = -30 + u + -1u

Combine like terms: u + -1u = 0
6.7 = -30 + 0
6.7 = -30

Solving
6.7 = -30

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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