Add 18/15 and 7/56
1st number: 1 3/15, 2nd number: 7/56
18/15 + 7/56 is 53/40.
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,
18/15 = 18 × 56/15 × 56 = 1008/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
7/56 = 7 × 15/56 × 15 = 105/840 - Add the two like fractions:
1008/840 + 105/840 = 1008 + 105/840 = 1113/840 - 1113/840 simplified gives 53/40
- So, 18/15 + 7/56 = 53/40
In mixed form: 113/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15+7/56 18/15+14/56 18/30+7/56 54/15+7/56 18/15+21/56 18/45+7/56 90/15+7/56 18/15+35/56 18/75+7/56 18/15+49/56