Add 15/3 and 70/20
1st number: 5 0/3, 2nd number: 3 10/20
15/3 + 70/20 is 17/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 3 × 20 = 60,
15/3 = 15 × 20/3 × 20 = 300/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
70/20 = 70 × 3/20 × 3 = 210/60 - Add the two like fractions:
300/60 + 210/60 = 300 + 210/60 = 510/60 - 510/60 simplified gives 17/2
- So, 15/3 + 70/20 = 17/2
In mixed form: 81/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/3+70/20 15/6+70/20 15/3+70/40 45/3+70/20 15/9+70/20 15/3+70/60 75/3+70/20 15/21+70/20