Add 3/40 and 24/81
3/40 + 24/81 is 401/1080.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 81 is 3240
Next, find the equivalent fraction of both fractional numbers with denominator 3240 - For the 1st fraction, since 40 × 81 = 3240,
3/40 = 3 × 81/40 × 81 = 243/3240 - Likewise, for the 2nd fraction, since 81 × 40 = 3240,
24/81 = 24 × 40/81 × 40 = 960/3240 - Add the two like fractions:
243/3240 + 960/3240 = 243 + 960/3240 = 1203/3240 - 1203/3240 simplified gives 401/1080
- So, 3/40 + 24/81 = 401/1080
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/40+24/81 3/40+48/81 3/80+24/81 9/40+24/81 3/40+72/81 15/40+24/81 21/40+24/81