Subtract 15/98 from 8/70
8/70 - 15/98 is -19/490.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 98 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 70 × 7 = 490,
8/70 = 8 × 7/70 × 7 = 56/490 - Likewise, for the 2nd fraction, since 98 × 5 = 490,
15/98 = 15 × 5/98 × 5 = 75/490 - Subtract the two like fractions:
56/490 - 75/490 = 56 - 75/490 = -19/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/70-15/98 8/70-30/98 24/70-15/98 8/70-45/98 40/70-15/98 8/70-75/98 56/70-15/98