if a number is subtracted from the numerator of 3/5 and the same number is added to the denomminator of 3/5, the result is equivalent to 1. find the number

Answer 1

It helps to change to decimal form.

(.6 -n)/(.6 +n) = 1

Multiply both sides by (.6+n).

.6 - n = .6 + n

You should be able to solve it from here.