Subtract 28/98 from 9/70
9/70 - 28/98 is -11/70.
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,
9/70 = 9 × 7/70 × 7 = 63/490 - Likewise, for the 2nd fraction, since 98 × 5 = 490,
28/98 = 28 × 5/98 × 5 = 140/490 - Subtract the two like fractions:
63/490 - 140/490 = 63 - 140/490 = -77/490 - After reducing the fraction, the answer is -11/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/70-28/98 9/70-56/98 27/70-28/98 9/70-84/98 45/70-28/98 63/70-28/98