9u-9=72

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Solution for 9u-9=72 equation: 


Simplifying
9u + -9 = 72

Reorder the terms:
-9 + 9u = 72

Solving
-9 + 9u = 72

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 + 9u = 72 + 9

Combine like terms: -9 + 9 = 0
0 + 9u = 72 + 9
9u = 72 + 9

Combine like terms: 72 + 9 = 81
9u = 81

Divide each side by '9'.
u = 9

Simplifying
u = 9

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