2n+7=10n-9

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Solution for 2n+7=10n-9 equation:


Simplifying
2n + 7 = 10n + -9

Reorder the terms:
7 + 2n = 10n + -9

Reorder the terms:
7 + 2n = -9 + 10n

Solving
7 + 2n = -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.
7 + 2n + -10n = -9 + 10n + -10n

Combine like terms: 2n + -10n = -8n
7 + -8n = -9 + 10n + -10n

Combine like terms: 10n + -10n = 0
7 + -8n = -9 + 0
7 + -8n = -9

Add '-7' to each side of the equation.
7 + -7 + -8n = -9 + -7

Combine like terms: 7 + -7 = 0
0 + -8n = -9 + -7
-8n = -9 + -7

Combine like terms: -9 + -7 = -16
-8n = -16

Divide each side by '-8'.
n = 2

Simplifying
n = 2

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