Add 81/12 and 15/75
1st number: 6 9/12, 2nd number: 15/75
81/12 + 15/75 is 139/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 75 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 12 × 25 = 300,
81/12 = 81 × 25/12 × 25 = 2025/300 - Likewise, for the 2nd fraction, since 75 × 4 = 300,
15/75 = 15 × 4/75 × 4 = 60/300 - Add the two like fractions:
2025/300 + 60/300 = 2025 + 60/300 = 2085/300 - 2085/300 simplified gives 139/20
- So, 81/12 + 15/75 = 139/20
In mixed form: 619/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/12+30/75 81/24+15/75 81/12+45/75 81/36+15/75 81/60+15/75 81/84+15/75