Answers

Add 15/64 and 90/72

1^st number: 15/64, 2^nd number: 1 18/72

15/64 + 90/72 is 95/64.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 72 is 576
   
   Next, find the equivalent fraction of both fractional numbers with denominator 576
2. For the 1st fraction, since 64 × 9 = 576,
   15/64 = 15 × 9/64 × 9 = 135/576
3. Likewise, for the 2nd fraction, since 72 × 8 = 576,
   90/72 = 90 × 8/72 × 8 = 720/576
4. Add the two like fractions:
   135/576 + 720/576 = 135 + 720/576 = 855/576
5. 855/576 simplified gives 95/64
6. So, 15/64 + 90/72 = 95/64
   In mixed form: 131/64

MathStep (Works offline)

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

Related: ³⁰/₆₄+⁹⁰/₇₂ ⁴⁵/₆₄+⁹⁰/₇₂ ⁷⁵/₆₄+⁹⁰/₇₂

Add Fractions Calculator