3u=40-5u

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Solution for 3u=40-5u equation: 


Simplifying
3u = 40 + -5u

Solving
3u = 40 + -5u

Solving for variable 'u'.

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

Add '5u' to each side of the equation.
3u + 5u = 40 + -5u + 5u

Combine like terms: 3u + 5u = 8u
8u = 40 + -5u + 5u

Combine like terms: -5u + 5u = 0
8u = 40 + 0
8u = 40

Divide each side by '8'.
u = 5

Simplifying
u = 5

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