Question

If a number is added to the numerator of 7/8 and the same number is subtracted from the denominator, the result is 4. Find the number.

Answer 1

Answer:

The number is 5.

Step-by-step explanation:

Call the number n. Write the problem as an equation:

$\frac{7+n}{8-n}=4\\7+n=(8-n)4=32-4n\\5n = 25\\n=5$

The number is 5.