3n+3=15

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Solution for 3n+3=15 equation: 


Simplifying
3n + 3 = 15

Reorder the terms:
3 + 3n = 15

Solving
3 + 3n = 15

Solving for variable 'n'.

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

Add '-3' to each side of the equation.
3 + -3 + 3n = 15 + -3

Combine like terms: 3 + -3 = 0
0 + 3n = 15 + -3
3n = 15 + -3

Combine like terms: 15 + -3 = 12
3n = 12

Divide each side by '3'.
n = 4

Simplifying
n = 4

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