Subtract 20/75 from 28/4, Solve 7 0/4

Subtract 20/75 from 28/4

1^st number: 7 0/4, 2^nd number: 20/75

28/4 - 20/75 is 101/15.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 75 is 300

Next, find the equivalent fraction of both fractional numbers with denominator 300
For the 1st fraction, since 4 × 75 = 300,
28/4 = 28 × 75/4 × 75 = 2100/300
Likewise, for the 2nd fraction, since 75 × 4 = 300,
20/75 = 20 × 4/75 × 4 = 80/300
Subtract the two like fractions:
2100/300 - 80/300 = 2100 - 80/300 = 2020/300
After reducing the fraction, the answer is 101/15
In mixed form: 611/15

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad