Add 45/12 and 81/16
1st number: 3 9/12, 2nd number: 5 1/16
45/12 + 81/16 is 141/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 16 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 12 × 4 = 48,
45/12 = 45 × 4/12 × 4 = 180/48 - Likewise, for the 2nd fraction, since 16 × 3 = 48,
81/16 = 81 × 3/16 × 3 = 243/48 - Add the two like fractions:
180/48 + 243/48 = 180 + 243/48 = 423/48 - 423/48 simplified gives 141/16
- So, 45/12 + 81/16 = 141/16
In mixed form: 813/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+81/16 45/24+81/16 45/12+81/32 45/36+81/16 45/12+81/48 45/60+81/16 45/12+81/80 45/84+81/16