Add 12/40 and 35/81
12/40 + 35/81 is 593/810.
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,
12/40 = 12 × 81/40 × 81 = 972/3240 - Likewise, for the 2nd fraction, since 81 × 40 = 3240,
35/81 = 35 × 40/81 × 40 = 1400/3240 - Add the two like fractions:
972/3240 + 1400/3240 = 972 + 1400/3240 = 2372/3240 - 2372/3240 simplified gives 593/810
- So, 12/40 + 35/81 = 593/810
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/40+35/81 12/40+70/81 12/80+35/81 36/40+35/81 60/40+35/81 84/40+35/81