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