Add 27/56 and 20/15
1st number: 27/56, 2nd number: 1 5/15
27/56 + 20/15 is 305/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 15 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
27/56 = 27 × 15/56 × 15 = 405/840 - Likewise, for the 2nd fraction, since 15 × 56 = 840,
20/15 = 20 × 56/15 × 56 = 1120/840 - Add the two like fractions:
405/840 + 1120/840 = 405 + 1120/840 = 1525/840 - 1525/840 simplified gives 305/168
- So, 27/56 + 20/15 = 305/168
In mixed form: 1137/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/56+20/15 27/56+40/15 27/56+20/30 81/56+20/15 27/56+60/15 27/56+20/45 27/56+20/75