10n-20=90

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Solution for 10n-20=90 equation: 


Simplifying
10n + -20 = 90

Reorder the terms:
-20 + 10n = 90

Solving
-20 + 10n = 90

Solving for variable 'n'.

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

Add '20' to each side of the equation.
-20 + 20 + 10n = 90 + 20

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

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

Divide each side by '10'.
n = 11

Simplifying
n = 11

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