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Solving the Proportion nn+14=57\frac{n}{n+14} = \frac{5}{7}

To find the solution to the proportion nn+14=57\frac{n}{n+14} = \frac{5}{7}, first eliminate the fractions by multiplying both sides by the least common denominator, 7(n+14)7(n+14). This step simplifies the equation to 7n=5(n+14)7n = 5(n+14). Next, distribute the 55 to yield 7n=5n+707n = 5n + 70. Subtract 5n5n from both sides to isolate the variable terms, resulting in 2n=702n = 70. Dividing both sides by 22 provides the solution n=35n = 35. The result can be verified by substituting 3535 back into the original proportion, yielding 3549=57\frac{35}{49} = \frac{5}{7}, which is a true statement.

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Updated 2026-04-30

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