Add 15/98 and 72/20
1st number: 15/98, 2nd number: 3 12/20
15/98 + 72/20 is 1839/490.
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,
15/98 = 15 × 10/98 × 10 = 150/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
72/20 = 72 × 49/20 × 49 = 3528/980 - Add the two like fractions:
150/980 + 3528/980 = 150 + 3528/980 = 3678/980 - 3678/980 simplified gives 1839/490
- So, 15/98 + 72/20 = 1839/490
In mixed form: 3369/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/98+72/20 15/98+72/40 45/98+72/20 15/98+72/60 75/98+72/20