Add 56/28 and 15/40
1st number: 2 0/28, 2nd number: 15/40
56/28 + 15/40 is 19/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
56/28 = 56 × 10/28 × 10 = 560/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
15/40 = 15 × 7/40 × 7 = 105/280 - Add the two like fractions:
560/280 + 105/280 = 560 + 105/280 = 665/280 - 665/280 simplified gives 19/8
- So, 56/28 + 15/40 = 19/8
In mixed form: 23/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/28+30/40 56/28+15/80 56/28+45/40 56/84+15/40 56/28+75/40