(n-9)*10=20

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Solution for (n-9)*10=20 equation:


Simplifying
(n + -9) * 10 = 20

Reorder the terms:
(-9 + n) * 10 = 20

Reorder the terms for easier multiplication:
10(-9 + n) = 20
(-9 * 10 + n * 10) = 20
(-90 + 10n) = 20

Solving
-90 + 10n = 20

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 + 10n = 20 + 90

Combine like terms: -90 + 90 = 0
0 + 10n = 20 + 90
10n = 20 + 90

Combine like terms: 20 + 90 = 110
10n = 110

Divide each side by '10'.
n = 11

Simplifying
n = 11

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