Add 40/28 and 28/80
1st number: 1 12/28, 2nd number: 28/80
40/28 + 28/80 is 249/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 28 × 20 = 560,
40/28 = 40 × 20/28 × 20 = 800/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
28/80 = 28 × 7/80 × 7 = 196/560 - Add the two like fractions:
800/560 + 196/560 = 800 + 196/560 = 996/560 - 996/560 simplified gives 249/140
- So, 40/28 + 28/80 = 249/140
In mixed form: 1109/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/28+28/80 40/28+56/80 40/56+28/80 40/28+84/80 40/84+28/80