N+2a=21

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Solution for N+2a=21 equation: 


Simplifying
N + 2a = 21

Solving
N + 2a = 21

Solving for variable 'N'.

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

Add '-2a' to each side of the equation.
N + 2a + -2a = 21 + -2a

Combine like terms: 2a + -2a = 0
N + 0 = 21 + -2a
N = 21 + -2a

Simplifying
N = 21 + -2a

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