Subtract 14/49 from 21/5, Solve 4 1/5

Subtract 14/49 from 21/5

1^st number: 4 1/5, 2^nd number: 14/49

21/5 - 14/49 is 137/35.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 49 is 245

Next, find the equivalent fraction of both fractional numbers with denominator 245
For the 1st fraction, since 5 × 49 = 245,
21/5 = 21 × 49/5 × 49 = 1029/245
Likewise, for the 2nd fraction, since 49 × 5 = 245,
14/49 = 14 × 5/49 × 5 = 70/245
Subtract the two like fractions:
1029/245 - 70/245 = 1029 - 70/245 = 959/245
After reducing the fraction, the answer is 137/35
In mixed form: 332/35

MathStep (Works offline)

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