Add 45/12 and 81/25
1st number: 3 9/12, 2nd number: 3 6/25
45/12 + 81/25 is 699/100.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 25 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 12 × 25 = 300,
45/12 = 45 × 25/12 × 25 = 1125/300 - Likewise, for the 2nd fraction, since 25 × 12 = 300,
81/25 = 81 × 12/25 × 12 = 972/300 - Add the two like fractions:
1125/300 + 972/300 = 1125 + 972/300 = 2097/300 - 2097/300 simplified gives 699/100
- So, 45/12 + 81/25 = 699/100
In mixed form: 699/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+81/25 45/24+81/25 45/12+81/50 45/36+81/25 45/12+81/75 45/60+81/25 45/84+81/25