Subtract 10/63 from 28/9, Solve 3 1/9

Subtract 10/63 from 28/9

1^st number: 3 1/9, 2^nd number: 10/63

28/9 - 10/63 is 62/21.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 63 is 63

Next, find the equivalent fraction of both fractional numbers with denominator 63
For the 1st fraction, since 9 × 7 = 63,
28/9 = 28 × 7/9 × 7 = 196/63
Likewise, for the 2nd fraction, since 63 × 1 = 63,
10/63 = 10 × 1/63 × 1 = 10/63
Subtract the two like fractions:
196/63 - 10/63 = 196 - 10/63 = 186/63
After reducing the fraction, the answer is 62/21
In mixed form: 220/21

MathStep (Works offline)

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