Add 3/81 and 28/40
3/81 + 28/40 is 199/270.
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,
3/81 = 3 × 40/81 × 40 = 120/3240 - Likewise, for the 2nd fraction, since 40 × 81 = 3240,
28/40 = 28 × 81/40 × 81 = 2268/3240 - Add the two like fractions:
120/3240 + 2268/3240 = 120 + 2268/3240 = 2388/3240 - 2388/3240 simplified gives 199/270
- So, 3/81 + 28/40 = 199/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/81+28/40 3/81+56/40 3/81+28/80 9/81+28/40 3/81+84/40 15/81+28/40 21/81+28/40