3N+N-2=0

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Solution for 3N+N-2=0 equation: 


Simplifying
3N + N + -2 = 0

Reorder the terms:
-2 + 3N + N = 0

Combine like terms: 3N + N = 4N
-2 + 4N = 0

Solving
-2 + 4N = 0

Solving for variable 'N'.

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

Add '2' to each side of the equation.
-2 + 2 + 4N = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 4N = 0 + 2
4N = 0 + 2

Combine like terms: 0 + 2 = 2
4N = 2

Divide each side by '4'.
N = 0.5

Simplifying
N = 0.5

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