89=10n-9

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Solution for 89=10n-9 equation:


Simplifying
89 = 10n + -9

Reorder the terms:
89 = -9 + 10n

Solving
89 = -9 + 10n

Solving for variable 'n'.

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

Add '-10n' to each side of the equation.
89 + -10n = -9 + 10n + -10n

Combine like terms: 10n + -10n = 0
89 + -10n = -9 + 0
89 + -10n = -9

Add '-89' to each side of the equation.
89 + -89 + -10n = -9 + -89

Combine like terms: 89 + -89 = 0
0 + -10n = -9 + -89
-10n = -9 + -89

Combine like terms: -9 + -89 = -98
-10n = -98

Divide each side by '-10'.
n = 9.8

Simplifying
n = 9.8

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