9u=4u+40

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Solution for 9u=4u+40 equation: 


Simplifying
9u = 4u + 40

Reorder the terms:
9u = 40 + 4u

Solving
9u = 40 + 4u

Solving for variable 'u'.

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

Add '-4u' to each side of the equation.
9u + -4u = 40 + 4u + -4u

Combine like terms: 9u + -4u = 5u
5u = 40 + 4u + -4u

Combine like terms: 4u + -4u = 0
5u = 40 + 0
5u = 40

Divide each side by '5'.
u = 8

Simplifying
u = 8

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