3n+7=13

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Solution for 3n+7=13 equation: 


Simplifying
3n + 7 = 13

Reorder the terms:
7 + 3n = 13

Solving
7 + 3n = 13

Solving for variable 'n'.

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

Add '-7' to each side of the equation.
7 + -7 + 3n = 13 + -7

Combine like terms: 7 + -7 = 0
0 + 3n = 13 + -7
3n = 13 + -7

Combine like terms: 13 + -7 = 6
3n = 6

Divide each side by '3'.
n = 2

Simplifying
n = 2

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