Add 5/15 and 49/42
1st number: 5/15, 2nd number: 1 7/42
5/15 + 49/42 is 3/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
5/15 = 5 × 14/15 × 14 = 70/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
49/42 = 49 × 5/42 × 5 = 245/210 - Add the two like fractions:
70/210 + 245/210 = 70 + 245/210 = 315/210 - 315/210 simplified gives 3/2
- So, 5/15 + 49/42 = 3/2
In mixed form: 11/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/15+49/42 5/15+98/42 5/30+49/42 5/15+49/84 5/45+49/42 25/15+49/42 5/75+49/42 35/15+49/42