10+N+N=18

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Solution for 10+N+N=18 equation: 


Simplifying
10 + N + N = 18

Combine like terms: N + N = 2N
10 + 2N = 18

Solving
10 + 2N = 18

Solving for variable 'N'.

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

Add '-10' to each side of the equation.
10 + -10 + 2N = 18 + -10

Combine like terms: 10 + -10 = 0
0 + 2N = 18 + -10
2N = 18 + -10

Combine like terms: 18 + -10 = 8
2N = 8

Divide each side by '2'.
N = 4

Simplifying
N = 4

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