Answers

Add 90/64 and 80/20

1^st number: 1 26/64, 2^nd number: 4 0/20

90/64 + 80/20 is 173/32.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 20 is 320
   
   Next, find the equivalent fraction of both fractional numbers with denominator 320
2. For the 1st fraction, since 64 × 5 = 320,
   90/64 = 90 × 5/64 × 5 = 450/320
3. Likewise, for the 2nd fraction, since 20 × 16 = 320,
   80/20 = 80 × 16/20 × 16 = 1280/320
4. Add the two like fractions:
   450/320 + 1280/320 = 450 + 1280/320 = 1730/320
5. 1730/320 simplified gives 173/32
6. So, 90/64 + 80/20 = 173/32
   In mixed form: 513/32

MathStep (Works offline)

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

Related: ⁹⁰/₆₄+⁸⁰/₄₀ ⁹⁰/₆₄+⁸⁰/₆₀

Add Fractions Calculator