8=18-u

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Solution for 8=18-u equation: 


Simplifying
8 = 18 + -1u

Solving
8 = 18 + -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.
8 + u = 18 + -1u + u

Combine like terms: -1u + u = 0
8 + u = 18 + 0
8 + u = 18

Add '-8' to each side of the equation.
8 + -8 + u = 18 + -8

Combine like terms: 8 + -8 = 0
0 + u = 18 + -8
u = 18 + -8

Combine like terms: 18 + -8 = 10
u = 10

Simplifying
u = 10

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