2=15-u

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Solution for 2=15-u equation: 


Simplifying
2 = 15 + -1u

Solving
2 = 15 + -1u

Solving for variable 'u'.

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

Add 'u' to each side of the equation.
2 + u = 15 + -1u + u

Combine like terms: -1u + u = 0
2 + u = 15 + 0
2 + u = 15

Add '-2' to each side of the equation.
2 + -2 + u = 15 + -2

Combine like terms: 2 + -2 = 0
0 + u = 15 + -2
u = 15 + -2

Combine like terms: 15 + -2 = 13
u = 13

Simplifying
u = 13

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