[n-10]*9=18

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Solution for [n-10]*9=18 equation:


Simplifying
[n + -10] * 9 = 18

Reorder the terms:
[-10 + n] * 9 = 18

Reorder the terms for easier multiplication:
9[-10 + n] = 18
[-10 * 9 + n * 9] = 18
[-90 + 9n] = 18

Solving
-90 + 9n = 18

Solving for variable 'n'.

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

Add '90' to each side of the equation.
-90 + 90 + 9n = 18 + 90

Combine like terms: -90 + 90 = 0
0 + 9n = 18 + 90
9n = 18 + 90

Combine like terms: 18 + 90 = 108
9n = 108

Divide each side by '9'.
n = 12

Simplifying
n = 12

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