Add 20/15 and 80/35
1st number: 1 5/15, 2nd number: 2 10/35
20/15 + 80/35 is 76/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 35 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
20/15 = 20 × 7/15 × 7 = 140/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
80/35 = 80 × 3/35 × 3 = 240/105 - Add the two like fractions:
140/105 + 240/105 = 140 + 240/105 = 380/105 - 380/105 simplified gives 76/21
- So, 20/15 + 80/35 = 76/21
In mixed form: 313/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/15+80/35 20/30+80/35 20/15+80/70 60/15+80/35 20/45+80/35 20/75+80/35