Add 80/15 and 49/42
1st number: 5 5/15, 2nd number: 1 7/42
80/15 + 49/42 is 13/2.
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,
80/15 = 80 × 14/15 × 14 = 1120/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
49/42 = 49 × 5/42 × 5 = 245/210 - Add the two like fractions:
1120/210 + 245/210 = 1120 + 245/210 = 1365/210 - 1365/210 simplified gives 13/2
- So, 80/15 + 49/42 = 13/2
In mixed form: 61/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/15+98/42 80/30+49/42 80/15+49/84 80/45+49/42 80/75+49/42