3u-9=24

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Solution for 3u-9=24 equation: 


Simplifying
3u + -9 = 24

Reorder the terms:
-9 + 3u = 24

Solving
-9 + 3u = 24

Solving for variable 'u'.

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

Add '9' to each side of the equation.
-9 + 9 + 3u = 24 + 9

Combine like terms: -9 + 9 = 0
0 + 3u = 24 + 9
3u = 24 + 9

Combine like terms: 24 + 9 = 33
3u = 33

Divide each side by '3'.
u = 11

Simplifying
u = 11

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