3(7+2n)=30+7(n-1)

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Solution for 3(7+2n)=30+7(n-1) equation:


Simplifying
3(7 + 2n) = 30 + 7(n + -1)
(7 * 3 + 2n * 3) = 30 + 7(n + -1)
(21 + 6n) = 30 + 7(n + -1)

Reorder the terms:
21 + 6n = 30 + 7(-1 + n)
21 + 6n = 30 + (-1 * 7 + n * 7)
21 + 6n = 30 + (-7 + 7n)

Combine like terms: 30 + -7 = 23
21 + 6n = 23 + 7n

Solving
21 + 6n = 23 + 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.
21 + 6n + -7n = 23 + 7n + -7n

Combine like terms: 6n + -7n = -1n
21 + -1n = 23 + 7n + -7n

Combine like terms: 7n + -7n = 0
21 + -1n = 23 + 0
21 + -1n = 23

Add '-21' to each side of the equation.
21 + -21 + -1n = 23 + -21

Combine like terms: 21 + -21 = 0
0 + -1n = 23 + -21
-1n = 23 + -21

Combine like terms: 23 + -21 = 2
-1n = 2

Divide each side by '-1'.
n = -2

Simplifying
n = -2

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