Subtract 98/28 from 20/70
1st number: 20/70, 2nd number: 3 14/28
20/70 - 98/28 is -45/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
20/70 = 20 × 2/70 × 2 = 40/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
98/28 = 98 × 5/28 × 5 = 490/140 - Subtract the two like fractions:
40/140 - 490/140 = 40 - 490/140 = -450/140 - After reducing the fraction, the answer is -45/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/70-98/28 20/70-98/56 60/70-98/28 20/70-98/84