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3n + 6 = -9

Subtract 6 from both sides: 3n = -15

Divide both sides by 3: n = -5

Therefore n = -5

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Q: How do you do 3n plus 6 equals -9?
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What is 3n plus 9 equals 7n-15?

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What is the answer to 3 plus 3n equals 9 plus 2n plus 4n?

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Let's give it a go:3n - 6 = 9Add 6 to each side of the equation:3n = 15Divide each side by 3:n = 5


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What is -15 equals equals 6 plus?

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What is this property 4 plus 9 plus 6 equals 4 plus 9 plus 6?

Commutativity.