2n+5(n+-1)=12

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Solution for 2n+5(n+-1)=12 equation:


Simplifying
2n + 5(n + -1) = 12

Reorder the terms:
2n + 5(-1 + n) = 12
2n + (-1 * 5 + n * 5) = 12
2n + (-5 + 5n) = 12

Reorder the terms:
-5 + 2n + 5n = 12

Combine like terms: 2n + 5n = 7n
-5 + 7n = 12

Solving
-5 + 7n = 12

Solving for variable 'n'.

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

Add '5' to each side of the equation.
-5 + 5 + 7n = 12 + 5

Combine like terms: -5 + 5 = 0
0 + 7n = 12 + 5
7n = 12 + 5

Combine like terms: 12 + 5 = 17
7n = 17

Divide each side by '7'.
n = 2.428571429

Simplifying
n = 2.428571429

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