Subtract 4/25 from 21/3, Solve 7 0/3

Subtract 4/25 from 21/3

1^st number: 7 0/3, 2^nd number: 4/25

21/3 - 4/25 is 171/25.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 25 is 75

Next, find the equivalent fraction of both fractional numbers with denominator 75
For the 1st fraction, since 3 × 25 = 75,
21/3 = 21 × 25/3 × 25 = 525/75
Likewise, for the 2nd fraction, since 25 × 3 = 75,
4/25 = 4 × 3/25 × 3 = 12/75
Subtract the two like fractions:
525/75 - 12/75 = 525 - 12/75 = 513/75
After reducing the fraction, the answer is 171/25
In mixed form: 621/25

MathStep (Works offline)

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