Answers

Add 15/54 and 63/56

1^st number: 15/54, 2^nd number: 1 7/56

15/54 + 63/56 is 101/72.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 56 is 1512
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1512
2. For the 1st fraction, since 54 × 28 = 1512,
   15/54 = 15 × 28/54 × 28 = 420/1512
3. Likewise, for the 2nd fraction, since 56 × 27 = 1512,
   63/56 = 63 × 27/56 × 27 = 1701/1512
4. Add the two like fractions:
   420/1512 + 1701/1512 = 420 + 1701/1512 = 2121/1512
5. 2121/1512 simplified gives 101/72
6. So, 15/54 + 63/56 = 101/72
   In mixed form: 129/72

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ³⁰/₅₄+⁶³/₅₆ ⁴⁵/₅₄+⁶³/₅₆ ⁷⁵/₅₄+⁶³/₅₆

Add Fractions Calculator