Subtract 75/70 from 15/98
1st number: 15/98, 2nd number: 1 5/70
15/98 - 75/70 is -45/49.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 70 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 98 × 5 = 490,
15/98 = 15 × 5/98 × 5 = 75/490 - Likewise, for the 2nd fraction, since 70 × 7 = 490,
75/70 = 75 × 7/70 × 7 = 525/490 - Subtract the two like fractions:
75/490 - 525/490 = 75 - 525/490 = -450/490 - After reducing the fraction, the answer is -45/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/98-75/70 45/98-75/70 75/98-75/70