15=u-1

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Solution for 15=u-1 equation: 


Simplifying
15 = u + -1

Reorder the terms:
15 = -1 + u

Solving
15 = -1 + u

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.
15 + -1u = -1 + u + -1u

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

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

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

Combine like terms: -1 + -15 = -16
-1u = -16

Divide each side by '-1'.
u = 16

Simplifying
u = 16

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