U-u+2u=12

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Solution for U-u+2u=12 equation: 


Simplifying
U + -1u + 2u = 12

Combine like terms: -1u + 2u = 1u
U + 1u = 12

Solving
U + 1u = 12

Solving for variable 'U'.

Move all terms containing U to the left, all other terms to the right.

Add '-1u' to each side of the equation.
U + 1u + -1u = 12 + -1u

Combine like terms: 1u + -1u = 0
U + 0 = 12 + -1u
U = 12 + -1u

Simplifying
U = 12 + -1u

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