6n+9=-3n-21-6

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Solution for 6n+9=-3n-21-6 equation:


Simplifying
6n + 9 = -3n + -21 + -6

Reorder the terms:
9 + 6n = -3n + -21 + -6

Reorder the terms:
9 + 6n = -21 + -6 + -3n

Combine like terms: -21 + -6 = -27
9 + 6n = -27 + -3n

Solving
9 + 6n = -27 + -3n

Solving for variable 'n'.

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

Add '3n' to each side of the equation.
9 + 6n + 3n = -27 + -3n + 3n

Combine like terms: 6n + 3n = 9n
9 + 9n = -27 + -3n + 3n

Combine like terms: -3n + 3n = 0
9 + 9n = -27 + 0
9 + 9n = -27

Add '-9' to each side of the equation.
9 + -9 + 9n = -27 + -9

Combine like terms: 9 + -9 = 0
0 + 9n = -27 + -9
9n = -27 + -9

Combine like terms: -27 + -9 = -36
9n = -36

Divide each side by '9'.
n = -4

Simplifying
n = -4

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