3(7+7n)=105

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Solution for 3(7+7n)=105 equation: 


Simplifying
3(7 + 7n) = 105
(7 * 3 + 7n * 3) = 105
(21 + 21n) = 105

Solving
21 + 21n = 105

Solving for variable 'n'.

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

Add '-21' to each side of the equation.
21 + -21 + 21n = 105 + -21

Combine like terms: 21 + -21 = 0
0 + 21n = 105 + -21
21n = 105 + -21

Combine like terms: 105 + -21 = 84
21n = 84

Divide each side by '21'.
n = 4

Simplifying
n = 4

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