9u-24=21

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Solution for 9u-24=21 equation: 


Simplifying
9u + -24 = 21

Reorder the terms:
-24 + 9u = 21

Solving
-24 + 9u = 21

Solving for variable 'u'.

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

Add '24' to each side of the equation.
-24 + 24 + 9u = 21 + 24

Combine like terms: -24 + 24 = 0
0 + 9u = 21 + 24
9u = 21 + 24

Combine like terms: 21 + 24 = 45
9u = 45

Divide each side by '9'.
u = 5

Simplifying
u = 5

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