Add 30/81 and 75/10
1st number: 30/81, 2nd number: 7 5/10
30/81 + 75/10 is 425/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 10 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 81 × 10 = 810,
30/81 = 30 × 10/81 × 10 = 300/810 - Likewise, for the 2nd fraction, since 10 × 81 = 810,
75/10 = 75 × 81/10 × 81 = 6075/810 - Add the two like fractions:
300/810 + 6075/810 = 300 + 6075/810 = 6375/810 - 6375/810 simplified gives 425/54
- So, 30/81 + 75/10 = 425/54
In mixed form: 747/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/81+75/10 30/81+75/20 90/81+75/10 30/81+75/30 30/81+75/50 30/81+75/70