# math

If it says: "five less than three times a number is 20 More than half a number" would the equation be 3n-5=n/2+20? If so what would the answer be?

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3. 👁 97
1. Yes, it's the right equation.

3n-5=n/2+20

3n - n/2 = 25

6n - n = 50

5n = 50

n = 10

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2. Okay, but I believe you have lost the equal sign when you switched from 3n-5=n/2+20 to 3n-n/2=25.

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posted by jeffery
3. No, she did not lose anything
she subtracted n/2 both sides of the equal sign and
she added five on both sides of the equal sign.

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posted by Damon
4. Oh, I did the oppistie of that. I multiplied the 2 from n/2 on both sides of the equal sign and I got, n, as 5. However, how could you subtract from a division to a multiplication?

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posted by jeffery
5. ok, I will do it your way

2(3n-5) = 2(n/2+20)

6 n -10 = n + 40

5 n = 50

n = 10

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posted by Damon

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