9u=40+u

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Solution for 9u=40+u equation: 


Simplifying
9u = 40 + u

Solving
9u = 40 + 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.
9u + -1u = 40 + u + -1u

Combine like terms: 9u + -1u = 8u
8u = 40 + u + -1u

Combine like terms: u + -1u = 0
8u = 40 + 0
8u = 40

Divide each side by '8'.
u = 5

Simplifying
u = 5

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