Add 18/15 and 42/49
1st number: 1 3/15, 2nd number: 42/49
18/15 + 42/49 is 72/35.
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,
18/15 = 18 × 49/15 × 49 = 882/735 - Likewise, for the 2nd fraction, since 49 × 15 = 735,
42/49 = 42 × 15/49 × 15 = 630/735 - Add the two like fractions:
882/735 + 630/735 = 882 + 630/735 = 1512/735 - 1512/735 simplified gives 72/35
- So, 18/15 + 42/49 = 72/35
In mixed form: 22/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15+42/49 18/15+84/49 18/30+42/49 18/15+42/98 54/15+42/49 18/45+42/49 90/15+42/49 18/75+42/49