Subtract 2/30 from 98/21, Solve 4 14/21

Subtract 2/30 from 98/21

1^st number: 4 14/21, 2^nd number: 2/30

98/21 - 2/30 is 23/5.

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,
2/30 = 2 × 7/30 × 7 = 14/210
Subtract the two like fractions:
980/210 - 14/210 = 980 - 14/210 = 966/210
After reducing the fraction, the answer is 23/5
In mixed form: 43/5

MathStep (Works offline)

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