Subtract 70/10 from 98/21
1st number: 4 14/21, 2nd number: 7 0/10
98/21 - 70/10 is -7/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 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 10 × 21 = 210,
70/10 = 70 × 21/10 × 21 = 1470/210 - Subtract the two like fractions:
980/210 - 1470/210 = 980 - 1470/210 = -490/210 - After reducing the fraction, the answer is -7/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/42-70/10 98/21-70/20 98/63-70/10 98/21-70/30 98/21-70/50