Add 20/15 and 36/56
1st number: 1 5/15, 2nd number: 36/56
20/15 + 36/56 is 83/42.
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,
20/15 = 20 × 56/15 × 56 = 1120/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
36/56 = 36 × 15/56 × 15 = 540/840 - Add the two like fractions:
1120/840 + 540/840 = 1120 + 540/840 = 1660/840 - 1660/840 simplified gives 83/42
- So, 20/15 + 36/56 = 83/42
In mixed form: 141/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/15+36/56 20/15+72/56 20/30+36/56 60/15+36/56 20/45+36/56 20/75+36/56