Subtract 70/42 from 98/20
1st number: 4 18/20, 2nd number: 1 28/42
98/20 - 70/42 is 97/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
98/20 = 98 × 21/20 × 21 = 2058/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
70/42 = 70 × 10/42 × 10 = 700/420 - Subtract the two like fractions:
2058/420 - 700/420 = 2058 - 700/420 = 1358/420 - After reducing the fraction, the answer is 97/30
- In mixed form: 37/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/40-70/42 98/20-70/84 98/60-70/42