(u-10)*9=81

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Solution for (u-10)*9=81 equation:


Simplifying
(u + -10) * 9 = 81

Reorder the terms:
(-10 + u) * 9 = 81

Reorder the terms for easier multiplication:
9(-10 + u) = 81
(-10 * 9 + u * 9) = 81
(-90 + 9u) = 81

Solving
-90 + 9u = 81

Solving for variable 'u'.

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

Add '90' to each side of the equation.
-90 + 90 + 9u = 81 + 90

Combine like terms: -90 + 90 = 0
0 + 9u = 81 + 90
9u = 81 + 90

Combine like terms: 81 + 90 = 171
9u = 171

Divide each side by '9'.
u = 19

Simplifying
u = 19

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