Subtract 10/98 from 63/70
63/70 - 10/98 is 391/490.
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,
63/70 = 63 × 7/70 × 7 = 441/490 - Likewise, for the 2nd fraction, since 98 × 5 = 490,
10/98 = 10 × 5/98 × 5 = 50/490 - Subtract the two like fractions:
441/490 - 50/490 = 441 - 50/490 = 391/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/70-20/98 63/70-30/98 63/70-50/98 63/70-70/98