Add 30/15 and 42/49
1st number: 2 0/15, 2nd number: 42/49
30/15 + 42/49 is 20/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 49 is 735
Next, find the equivalent fraction of both fractional numbers with denominator 735 - For the 1st fraction, since 15 × 49 = 735,
30/15 = 30 × 49/15 × 49 = 1470/735 - Likewise, for the 2nd fraction, since 49 × 15 = 735,
42/49 = 42 × 15/49 × 15 = 630/735 - Add the two like fractions:
1470/735 + 630/735 = 1470 + 630/735 = 2100/735 - 2100/735 simplified gives 20/7
- So, 30/15 + 42/49 = 20/7
In mixed form: 26/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/15+42/49 30/15+84/49 30/15+42/98 90/15+42/49 30/45+42/49 30/75+42/49