Add 81/20 and 70/3
1st number: 4 1/20, 2nd number: 23 1/3
81/20 + 70/3 is 1643/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 3 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
81/20 = 81 × 3/20 × 3 = 243/60 - Likewise, for the 2nd fraction, since 3 × 20 = 60,
70/3 = 70 × 20/3 × 20 = 1400/60 - Add the two like fractions:
243/60 + 1400/60 = 243 + 1400/60 = 1643/60 - So, 81/20 + 70/3 = 1643/60
In mixed form: 2723/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/40+70/3 81/20+70/6 81/60+70/3 81/20+70/9 81/20+70/15 81/20+70/21