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Which phrase represents the algebraic expression [tex] \frac{3p+6}{7p-9} \) ?

A. The sum of six times a number and three, multiplied by the difference of nine times the number and seven

B. The sum of six times a number and three, divided by the difference of nine times the number and seven

C. The sum of three times a number and six, multiplied by the difference of seven times the number and nine

D. The sum of three times a number and six, divided by the difference of seven times the number and nine


Sagot :

To determine which phrase represents the algebraic expression [tex]\(\frac{3p + 6}{7p - 9}\)[/tex], we need to carefully analyze each phrase and match it to the given algebraic expression.

Let's break down each part of the expression step-by-step.

### Given Expression
[tex]\[ \frac{3p + 6}{7p - 9} \][/tex]

#### Numerator: [tex]\(3p + 6\)[/tex]
- This part is the sum of three times a number [tex]\(p\)[/tex] and six.

#### Denominator: [tex]\(7p - 9\)[/tex]
- This part is the difference of seven times a number [tex]\(p\)[/tex] and nine.

Now, let's review the given phrases:

1. "the sum of six times a number and three, multiplied by the difference of nine times the number and seven"
- Numerator: [tex]\(6p + 3\)[/tex]
- Denominator: [tex]\(9p - 7\)[/tex]
- This does not match [tex]\(\frac{3p + 6}{7p - 9}\)[/tex].

2. "the sum of six times a number and three, divided by the difference of nine times the number and seven"
- Numerator: [tex]\(6p + 3\)[/tex]
- Denominator: [tex]\(9p - 7\)[/tex]
- This does not match [tex]\(\frac{3p + 6}{7p - 9}\)[/tex].

3. "the sum of three times a number and six, multiplied by the difference of seven times the number and nine"
- Numerator: [tex]\(3p + 6\)[/tex]
- Denominator: [tex]\(7p - 9\)[/tex] (but indicates multiplication instead of division)
- This is not correct because the phrase indicates multiplication rather than division.

4. "the sum of three times a number and six, divided by the difference of seven times the number and nine"
- Numerator: [tex]\(3p + 6\)[/tex]
- Denominator: [tex]\(7p - 9\)[/tex]
- This matches exactly with [tex]\(\frac{3p + 6}{7p - 9}\)[/tex] since it correctly identifies the division operation.

### Conclusion
The phrase that correctly represents the given algebraic expression [tex]\(\frac{3p + 6}{7p - 9}\)[/tex] is:
[tex]\[ \boxed{\text{the sum of three times a number and six, divided by the difference of seven times the number and nine}} \][/tex]