3u-3y=30

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Solution for 3u-3y=30 equation: 


Simplifying
3u + -3y = 30

Solving
3u + -3y = 30

Solving for variable 'u'.

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

Add '3y' to each side of the equation.
3u + -3y + 3y = 30 + 3y

Combine like terms: -3y + 3y = 0
3u + 0 = 30 + 3y
3u = 30 + 3y

Divide each side by '3'.
u = 10 + y

Simplifying
u = 10 + y

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