Add 80/75 and 21/7
1st number: 1 5/75, 2nd number: 3 0/7
80/75 + 21/7 is 61/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 7 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 75 × 7 = 525,
80/75 = 80 × 7/75 × 7 = 560/525 - Likewise, for the 2nd fraction, since 7 × 75 = 525,
21/7 = 21 × 75/7 × 75 = 1575/525 - Add the two like fractions:
560/525 + 1575/525 = 560 + 1575/525 = 2135/525 - 2135/525 simplified gives 61/15
- So, 80/75 + 21/7 = 61/15
In mixed form: 41/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/75+42/7 80/75+21/14 80/75+63/7 80/75+21/35 80/75+21/49