Answers

Add 42/64 and 40/63

42/64 + 40/63 is 2603/2016.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 63 is 4032
   
   Next, find the equivalent fraction of both fractional numbers with denominator 4032
2. For the 1st fraction, since 64 × 63 = 4032,
   42/64 = 42 × 63/64 × 63 = 2646/4032
3. Likewise, for the 2nd fraction, since 63 × 64 = 4032,
   40/63 = 40 × 64/63 × 64 = 2560/4032
4. Add the two like fractions:
   2646/4032 + 2560/4032 = 2646 + 2560/4032 = 5206/4032
5. 5206/4032 simplified gives 2603/2016
6. So, 42/64 + 40/63 = 2603/2016
   In mixed form: 1587/2016

MathStep (Works offline)

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

Related: ⁸⁴/₆₄+⁴⁰/₆₃ ⁴²/₆₄+⁸⁰/₆₃

Add Fractions Calculator