3(7+n)=21

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Solution for 3(7+n)=21 equation: 


Simplifying
3(7 + n) = 21
(7 * 3 + n * 3) = 21
(21 + 3n) = 21

Add '-21' to each side of the equation.
21 + -21 + 3n = 21 + -21

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

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

Solving
3n = 0

Solving for variable 'n'.

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

Divide each side by '3'.
n = 0

Simplifying
n = 0

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