Subtract 4/30 from 98/21
1st number: 4 14/21, 2nd number: 4/30
98/21 - 4/30 is 68/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
98/21 = 98 × 10/21 × 10 = 980/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
4/30 = 4 × 7/30 × 7 = 28/210 - Subtract the two like fractions:
980/210 - 28/210 = 980 - 28/210 = 952/210 - After reducing the fraction, the answer is 68/15
- In mixed form: 48/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/21-8/30 98/42-4/30 98/21-4/60 98/21-12/30 98/63-4/30 98/21-4/90 98/21-20/30 98/21-28/30