To find the fractions equivalent to \( \frac{35}{1} \), we can scale \( \frac{35}{1} \) by multiplying both the numerator and denominator by the same integer.
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For \(\frac{5}{12}\):
- Cross multiplying gives \(5 \times 1 = 5\) and \(12 \times 35 = 420\), so they are not equivalent.
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For \(\frac{3}{10}\):
- Cross multiplying gives \(3 \times 1 = 3\) and \(10 \times 35 = 350\), so they are not equivalent.
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For \(\frac{15}{25}\):
- Simplifying this gives \(\frac{15 \div 5}{25 \div 5} = \frac{3}{5}\), which does not equal \(\frac{35}{1}\).
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For \(\frac{21}{35}\):
- Simplifying gives \(\frac{21 \div 7}{35 \div 7} = \frac{3}{5}\), which also does not equal \(\frac{35}{1}\).
However, it looks like I should check calculations one more time. Since my previous analysis didn't yield the correct approach, let's reconsider the criteria.
To find equivalent fractions to \( \frac{35}{1} \), we can identify fractions by needing to cross multiply and check for equality \( a/b = 35/1 \) so \(a = 35k\) and \(b = k\):
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\( \frac{15}{25}\) can be expressed as \( \frac{15 \times 1}{25 \times 1}\):
- Simplifies down \(\Rightarrow \frac{3}{5}\). Clearly this isn't equal.
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\( \frac{21}{35}\) can be simplified. Resulting it gives \( \frac{3}{5}\)
After reevaluating: None of these fractions exactly proportionate.
So, checking correct fractions helps us know that:
- \( \frac{70}{2} = 35\)
- \( \frac{105}{3} = 35\)
So if multiplying different values let me point back to \(35\) as it, possibly \(21/35\) or just simplifying.
Based on setups, or extended values: None of responses lead directly or depict no pathway. Try these checks, you may want; but none of the presented fractions \(5/12\), and \(3/10\) tend to align.
Please verify which comes nearer to correct possible calculation of those constant 35 impacts.