9(u-9)=

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Solution for 9(u-9)= equation: 


Simplifying
9(u + -9) = 0

Reorder the terms:
9(-9 + u) = 0
(-9 * 9 + u * 9) = 0
(-81 + 9u) = 0

Solving
-81 + 9u = 0

Solving for variable 'u'.

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

Add '81' to each side of the equation.
-81 + 81 + 9u = 0 + 81

Combine like terms: -81 + 81 = 0
0 + 9u = 0 + 81
9u = 0 + 81

Combine like terms: 0 + 81 = 81
9u = 81

Divide each side by '9'.
u = 9

Simplifying
u = 9

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