Add 21/3 and 10/72
1st number: 7 0/3, 2nd number: 10/72
21/3 + 10/72 is 257/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 3 × 24 = 72,
21/3 = 21 × 24/3 × 24 = 504/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
10/72 = 10 × 1/72 × 1 = 10/72 - Add the two like fractions:
504/72 + 10/72 = 504 + 10/72 = 514/72 - 514/72 simplified gives 257/36
- So, 21/3 + 10/72 = 257/36
In mixed form: 75/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/3+10/72 21/3+20/72 21/6+10/72 63/3+10/72 21/3+30/72 21/9+10/72 21/3+50/72 21/15+10/72 21/3+70/72