5-4n+7n-2=12

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Solution for 5-4n+7n-2=12 equation:


Simplifying
5 + -4n + 7n + -2 = 12

Reorder the terms:
5 + -2 + -4n + 7n = 12

Combine like terms: 5 + -2 = 3
3 + -4n + 7n = 12

Combine like terms: -4n + 7n = 3n
3 + 3n = 12

Solving
3 + 3n = 12

Solving for variable 'n'.

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

Add '-3' to each side of the equation.
3 + -3 + 3n = 12 + -3

Combine like terms: 3 + -3 = 0
0 + 3n = 12 + -3
3n = 12 + -3

Combine like terms: 12 + -3 = 9
3n = 9

Divide each side by '3'.
n = 3

Simplifying
n = 3

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