Add 40/15 and 28/56
1st number: 2 10/15, 2nd number: 28/56
40/15 + 28/56 is 19/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 15 × 56 = 840,
40/15 = 40 × 56/15 × 56 = 2240/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
28/56 = 28 × 15/56 × 15 = 420/840 - Add the two like fractions:
2240/840 + 420/840 = 2240 + 420/840 = 2660/840 - 2660/840 simplified gives 19/6
- So, 40/15 + 28/56 = 19/6
In mixed form: 31/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/15+28/56 40/30+28/56 40/15+84/56 40/45+28/56 40/75+28/56