7(n+3)=15-4(n-7)

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Solution for 7(n+3)=15-4(n-7) equation:


Simplifying
7(n + 3) = 15 + -4(n + -7)

Reorder the terms:
7(3 + n) = 15 + -4(n + -7)
(3 * 7 + n * 7) = 15 + -4(n + -7)
(21 + 7n) = 15 + -4(n + -7)

Reorder the terms:
21 + 7n = 15 + -4(-7 + n)
21 + 7n = 15 + (-7 * -4 + n * -4)
21 + 7n = 15 + (28 + -4n)

Combine like terms: 15 + 28 = 43
21 + 7n = 43 + -4n

Solving
21 + 7n = 43 + -4n

Solving for variable 'n'.

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

Add '4n' to each side of the equation.
21 + 7n + 4n = 43 + -4n + 4n

Combine like terms: 7n + 4n = 11n
21 + 11n = 43 + -4n + 4n

Combine like terms: -4n + 4n = 0
21 + 11n = 43 + 0
21 + 11n = 43

Add '-21' to each side of the equation.
21 + -21 + 11n = 43 + -21

Combine like terms: 21 + -21 = 0
0 + 11n = 43 + -21
11n = 43 + -21

Combine like terms: 43 + -21 = 22
11n = 22

Divide each side by '11'.
n = 2

Simplifying
n = 2

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