3N+9-2N=31

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Solution for 3N+9-2N=31 equation: 


Simplifying
3N + 9 + -2N = 31

Reorder the terms:
9 + 3N + -2N = 31

Combine like terms: 3N + -2N = 1N
9 + 1N = 31

Solving
9 + 1N = 31

Solving for variable 'N'.

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

Add '-9' to each side of the equation.
9 + -9 + 1N = 31 + -9

Combine like terms: 9 + -9 = 0
0 + 1N = 31 + -9
1N = 31 + -9

Combine like terms: 31 + -9 = 22
1N = 22

Divide each side by '1'.
N = 22

Simplifying
N = 22

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