Add 40/60 and 27/28
40/60 + 27/28 is 137/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
40/60 = 40 × 7/60 × 7 = 280/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
27/28 = 27 × 15/28 × 15 = 405/420 - Add the two like fractions:
280/420 + 405/420 = 280 + 405/420 = 685/420 - 685/420 simplified gives 137/84
- So, 40/60 + 27/28 = 137/84
In mixed form: 153/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/60+27/28 40/60+54/28 40/60+27/56 40/60+81/28 40/60+27/84