7n-(2n-9)=10n-2(n+12)

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Solution for 7n-(2n-9)=10n-2(n+12) equation:


Simplifying
7n + -1(2n + -9) = 10n + -2(n + 12)

Reorder the terms:
7n + -1(-9 + 2n) = 10n + -2(n + 12)
7n + (-9 * -1 + 2n * -1) = 10n + -2(n + 12)
7n + (9 + -2n) = 10n + -2(n + 12)

Reorder the terms:
9 + 7n + -2n = 10n + -2(n + 12)

Combine like terms: 7n + -2n = 5n
9 + 5n = 10n + -2(n + 12)

Reorder the terms:
9 + 5n = 10n + -2(12 + n)
9 + 5n = 10n + (12 * -2 + n * -2)
9 + 5n = 10n + (-24 + -2n)

Reorder the terms:
9 + 5n = -24 + 10n + -2n

Combine like terms: 10n + -2n = 8n
9 + 5n = -24 + 8n

Solving
9 + 5n = -24 + 8n

Solving for variable 'n'.

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

Add '-8n' to each side of the equation.
9 + 5n + -8n = -24 + 8n + -8n

Combine like terms: 5n + -8n = -3n
9 + -3n = -24 + 8n + -8n

Combine like terms: 8n + -8n = 0
9 + -3n = -24 + 0
9 + -3n = -24

Add '-9' to each side of the equation.
9 + -9 + -3n = -24 + -9

Combine like terms: 9 + -9 = 0
0 + -3n = -24 + -9
-3n = -24 + -9

Combine like terms: -24 + -9 = -33
-3n = -33

Divide each side by '-3'.
n = 11

Simplifying
n = 11

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