10n+12-7n+4n=31

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Solution for 10n+12-7n+4n=31 equation:


Simplifying
10n + 12 + -7n + 4n = 31

Reorder the terms:
12 + 10n + -7n + 4n = 31

Combine like terms: 10n + -7n = 3n
12 + 3n + 4n = 31

Combine like terms: 3n + 4n = 7n
12 + 7n = 31

Solving
12 + 7n = 31

Solving for variable 'n'.

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

Add '-12' to each side of the equation.
12 + -12 + 7n = 31 + -12

Combine like terms: 12 + -12 = 0
0 + 7n = 31 + -12
7n = 31 + -12

Combine like terms: 31 + -12 = 19
7n = 19

Divide each side by '7'.
n = 2.714285714

Simplifying
n = 2.714285714

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