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

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


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

Reorder the terms:
30 + 7n = -1n + -3(7 + 3n)
30 + 7n = -1n + (7 * -3 + 3n * -3)
30 + 7n = -1n + (-21 + -9n)

Reorder the terms:
30 + 7n = -21 + -1n + -9n

Combine like terms: -1n + -9n = -10n
30 + 7n = -21 + -10n

Solving
30 + 7n = -21 + -10n

Solving for variable 'n'.

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

Add '10n' to each side of the equation.
30 + 7n + 10n = -21 + -10n + 10n

Combine like terms: 7n + 10n = 17n
30 + 17n = -21 + -10n + 10n

Combine like terms: -10n + 10n = 0
30 + 17n = -21 + 0
30 + 17n = -21

Add '-30' to each side of the equation.
30 + -30 + 17n = -21 + -30

Combine like terms: 30 + -30 = 0
0 + 17n = -21 + -30
17n = -21 + -30

Combine like terms: -21 + -30 = -51
17n = -51

Divide each side by '17'.
n = -3

Simplifying
n = -3

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