6(n+7)=99-7(n-3)

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Solution for 6(n+7)=99-7(n-3) equation:


Simplifying
6(n + 7) = 99 + -7(n + -3)

Reorder the terms:
6(7 + n) = 99 + -7(n + -3)
(7 * 6 + n * 6) = 99 + -7(n + -3)
(42 + 6n) = 99 + -7(n + -3)

Reorder the terms:
42 + 6n = 99 + -7(-3 + n)
42 + 6n = 99 + (-3 * -7 + n * -7)
42 + 6n = 99 + (21 + -7n)

Combine like terms: 99 + 21 = 120
42 + 6n = 120 + -7n

Solving
42 + 6n = 120 + -7n

Solving for variable 'n'.

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

Add '7n' to each side of the equation.
42 + 6n + 7n = 120 + -7n + 7n

Combine like terms: 6n + 7n = 13n
42 + 13n = 120 + -7n + 7n

Combine like terms: -7n + 7n = 0
42 + 13n = 120 + 0
42 + 13n = 120

Add '-42' to each side of the equation.
42 + -42 + 13n = 120 + -42

Combine like terms: 42 + -42 = 0
0 + 13n = 120 + -42
13n = 120 + -42

Combine like terms: 120 + -42 = 78
13n = 78

Divide each side by '13'.
n = 6

Simplifying
n = 6

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