Subtract 70/15 from 98/42
1st number: 2 14/42, 2nd number: 4 10/15
98/42 - 70/15 is -7/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
98/42 = 98 × 5/42 × 5 = 490/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
70/15 = 70 × 14/15 × 14 = 980/210 - Subtract the two like fractions:
490/210 - 980/210 = 490 - 980/210 = -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: 98/84-70/15 98/42-70/30 98/42-70/45 98/42-70/75