Add 63/98 and 7/20
63/98 + 7/20 is 139/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 20 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 98 × 10 = 980,
63/98 = 63 × 10/98 × 10 = 630/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
7/20 = 7 × 49/20 × 49 = 343/980 - Add the two like fractions:
630/980 + 343/980 = 630 + 343/980 = 973/980 - 973/980 simplified gives 139/140
- So, 63/98 + 7/20 = 139/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/98+14/20 63/98+7/40 63/98+21/20 63/98+7/60 63/98+35/20 63/98+49/20