Add 20/3 and 42/80
1st number: 6 2/3, 2nd number: 42/80
20/3 + 42/80 is 863/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 3 × 80 = 240,
20/3 = 20 × 80/3 × 80 = 1600/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
42/80 = 42 × 3/80 × 3 = 126/240 - Add the two like fractions:
1600/240 + 126/240 = 1600 + 126/240 = 1726/240 - 1726/240 simplified gives 863/120
- So, 20/3 + 42/80 = 863/120
In mixed form: 723/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/3+42/80 20/3+84/80 20/6+42/80 60/3+42/80 20/9+42/80 20/15+42/80 20/21+42/80