Add 40/28 and 5/81
1st number: 1 12/28, 2nd number: 5/81
40/28 + 5/81 is 845/567.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 81 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 28 × 81 = 2268,
40/28 = 40 × 81/28 × 81 = 3240/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
5/81 = 5 × 28/81 × 28 = 140/2268 - Add the two like fractions:
3240/2268 + 140/2268 = 3240 + 140/2268 = 3380/2268 - 3380/2268 simplified gives 845/567
- So, 40/28 + 5/81 = 845/567
In mixed form: 1278/567
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/28+5/81 40/28+10/81 40/56+5/81 40/28+15/81 40/84+5/81 40/28+25/81 40/28+35/81