3n+9=-3(2n+3)

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Solution for 3n+9=-3(2n+3) equation:


Simplifying
3n + 9 = -3(2n + 3)

Reorder the terms:
9 + 3n = -3(2n + 3)

Reorder the terms:
9 + 3n = -3(3 + 2n)
9 + 3n = (3 * -3 + 2n * -3)
9 + 3n = (-9 + -6n)

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

Solving for variable 'n'.

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

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

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

Combine like terms: -6n + 6n = 0
9 + 9n = -9 + 0
9 + 9n = -9

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

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

Combine like terms: -9 + -9 = -18
9n = -18

Divide each side by '9'.
n = -2

Simplifying
n = -2

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