=3(n+7)

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Solution for =3(n+7) equation: 


Simplifying
0 = 3(n + 7)

Reorder the terms:
0 = 3(7 + n)
0 = (7 * 3 + n * 3)
0 = (21 + 3n)

Solving
0 = 21 + 3n

Solving for variable 'n'.

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

Add '-3n' to each side of the equation.
0 + -3n = 21 + 3n + -3n
Remove the zero:
-3n = 21 + 3n + -3n

Combine like terms: 3n + -3n = 0
-3n = 21 + 0
-3n = 21

Divide each side by '-3'.
n = -7

Simplifying
n = -7

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