Subtract 50/63 from 20/9, Solve 2 2/9

Subtract 50/63 from 20/9

1^st number: 2 2/9, 2^nd number: 50/63

20/9 - 50/63 is 10/7.

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,
20/9 = 20 × 7/9 × 7 = 140/63
Likewise, for the 2nd fraction, since 63 × 1 = 63,
50/63 = 50 × 1/63 × 1 = 50/63
Subtract the two like fractions:
140/63 - 50/63 = 140 - 50/63 = 90/63
After reducing the fraction, the answer is 10/7
In mixed form: 13/7

MathStep (Works offline)

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