Add 21/3 and 10/80
1st number: 7 0/3, 2nd number: 10/80
21/3 + 10/80 is 57/8.
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,
21/3 = 21 × 80/3 × 80 = 1680/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
10/80 = 10 × 3/80 × 3 = 30/240 - Add the two like fractions:
1680/240 + 30/240 = 1680 + 30/240 = 1710/240 - 1710/240 simplified gives 57/8
- So, 21/3 + 10/80 = 57/8
In mixed form: 71/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/3+10/80 21/3+20/80 21/6+10/80 63/3+10/80 21/3+30/80 21/9+10/80 21/3+50/80 21/15+10/80 21/3+70/80