Add 48/81 and 81/40
1st number: 48/81, 2nd number: 2 1/40
48/81 + 81/40 is 2827/1080.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 40 is 3240
Next, find the equivalent fraction of both fractional numbers with denominator 3240 - For the 1st fraction, since 81 × 40 = 3240,
48/81 = 48 × 40/81 × 40 = 1920/3240 - Likewise, for the 2nd fraction, since 40 × 81 = 3240,
81/40 = 81 × 81/40 × 81 = 6561/3240 - Add the two like fractions:
1920/3240 + 6561/3240 = 1920 + 6561/3240 = 8481/3240 - 8481/3240 simplified gives 2827/1080
- So, 48/81 + 81/40 = 2827/1080
In mixed form: 2667/1080
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/81+81/40 48/81+81/80