Add 1/40 and 49/81
1/40 + 49/81 is 2041/3240.
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,
1/40 = 1 × 81/40 × 81 = 81/3240 - Likewise, for the 2nd fraction, since 81 × 40 = 3240,
49/81 = 49 × 40/81 × 40 = 1960/3240 - Add the two like fractions:
81/3240 + 1960/3240 = 81 + 1960/3240 = 2041/3240 - So, 1/40 + 49/81 = 2041/3240
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/40+49/81 1/40+98/81 1/80+49/81 3/40+49/81 5/40+49/81 7/40+49/81