Answers

Add 80/10 and 21/64

1^st number: 8 0/10, 2^nd number: 21/64

80/10 + 21/64 is 533/64.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 64 is 320
2. For the 1st fraction, since 10 × 32 = 320,
   80/10 = 80 × 32/10 × 32 = 2560/320
3. Likewise, for the 2nd fraction, since 64 × 5 = 320,
   21/64 = 21 × 5/64 × 5 = 105/320
4. Add the two fractions:
   2560/320 + 105/320 = 2560 + 105/320 = 2665/320
5. 2665/320 simplified gives 533/64
6. So, 80/10 + 21/64 = 533/64
   In mixed form: 821/64

MathStep (Works offline)

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

Related: ⁸⁰/₁₀+⁴²/₆₄ ⁸⁰/₂₀+²¹/₆₄ ⁸⁰/₁₀+⁶³/₆₄ ⁸⁰/₃₀+²¹/₆₄ ⁸⁰/₅₀+²¹/₆₄ ⁸⁰/₇₀+²¹/₆₄

Add Fractions Calculator