find the difference 3/5 - 1/4
To add or subtrack fractions, it's necessary first
to write them with a common denominator.
You can always find a common denominator by
multiplying them together. Sometimes there's a
lower figure, though.
3 1
––– — ––– =
5 4
Multiply denominators to find a common denominator 5 * 4 = 20
Thus, the fractions become as follows
12 5 7
––– — ––– = –––
20 20 20
.
