Add 20/15 and 42/98
1st number: 1 5/15, 2nd number: 42/98
20/15 + 42/98 is 37/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 98 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 15 × 98 = 1470,
20/15 = 20 × 98/15 × 98 = 1960/1470 - Likewise, for the 2nd fraction, since 98 × 15 = 1470,
42/98 = 42 × 15/98 × 15 = 630/1470 - Add the two like fractions:
1960/1470 + 630/1470 = 1960 + 630/1470 = 2590/1470 - 2590/1470 simplified gives 37/21
- So, 20/15 + 42/98 = 37/21
In mixed form: 116/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/15+42/98 20/15+84/98 20/30+42/98 60/15+42/98 20/45+42/98 20/75+42/98