Add 72/20 and 7/98
1st number: 3 12/20, 2nd number: 7/98
72/20 + 7/98 is 257/70.
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,
72/20 = 72 × 49/20 × 49 = 3528/980 - Likewise, for the 2nd fraction, since 98 × 10 = 980,
7/98 = 7 × 10/98 × 10 = 70/980 - Add the two like fractions:
3528/980 + 70/980 = 3528 + 70/980 = 3598/980 - 3598/980 simplified gives 257/70
- So, 72/20 + 7/98 = 257/70
In mixed form: 347/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/20+14/98 72/40+7/98 72/20+21/98 72/60+7/98 72/20+35/98 72/20+49/98