Add 28/30 and 15/56
28/30 + 15/56 is 1009/840.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 30 × 28 = 840,
28/30 = 28 × 28/30 × 28 = 784/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
15/56 = 15 × 15/56 × 15 = 225/840 - Add the two like fractions:
784/840 + 225/840 = 784 + 225/840 = 1009/840 - So, 28/30 + 15/56 = 1009/840
In mixed form: 1169/840
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30+15/56 28/30+30/56 28/60+15/56 84/30+15/56 28/30+45/56 28/90+15/56 28/30+75/56