Add 10/75 and 72/80
10/75 + 72/80 is 31/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 80 is 1200
Next, find the equivalent fraction of both fractional numbers with denominator 1200 - For the 1st fraction, since 75 × 16 = 1200,
10/75 = 10 × 16/75 × 16 = 160/1200 - Likewise, for the 2nd fraction, since 80 × 15 = 1200,
72/80 = 72 × 15/80 × 15 = 1080/1200 - Add the two like fractions:
160/1200 + 1080/1200 = 160 + 1080/1200 = 1240/1200 - 1240/1200 simplified gives 31/30
- So, 10/75 + 72/80 = 31/30
In mixed form: 11/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/75+72/80 30/75+72/80 50/75+72/80 70/75+72/80