Answer:
7
Step-by-step explanation:
Suppose the "number" is x.
The problem says that when x is added to the numerator of 3/11 (in other words, added to 3) and subtracted from the denominator of 3/11 (in other words, subtracted from 11), the answer is 5/2. So:
(3 + x)/(11 - x) = 5/2
Cross-multiplying, we have:
2 * (3 + x) = 5 * (11 - x)
6 + 2x = 55 - 5x
7x = 55 - 6 = 49
x = 49/7 = 7
Thus, the answer is 7.
Hope this helps!
