(u-5)*9=81

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Solution for (u-5)*9=81 equation:


Simplifying
(u + -5) * 9 = 81

Reorder the terms:
(-5 + u) * 9 = 81

Reorder the terms for easier multiplication:
9(-5 + u) = 81
(-5 * 9 + u * 9) = 81
(-45 + 9u) = 81

Solving
-45 + 9u = 81

Solving for variable 'u'.

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

Add '45' to each side of the equation.
-45 + 45 + 9u = 81 + 45

Combine like terms: -45 + 45 = 0
0 + 9u = 81 + 45
9u = 81 + 45

Combine like terms: 81 + 45 = 126
9u = 126

Divide each side by '9'.
u = 14

Simplifying
u = 14

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