Answers

Add 80/21 and 5/75

1^st number: 3 17/21, 2^nd number: 5/75

80/21 + 5/75 is 407/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 75 is 525
   
   Next, find the equivalent fraction of both fractional numbers with denominator 525
2. For the 1st fraction, since 21 × 25 = 525,
   80/21 = 80 × 25/21 × 25 = 2000/525
3. Likewise, for the 2nd fraction, since 75 × 7 = 525,
   5/75 = 5 × 7/75 × 7 = 35/525
4. Add the two like fractions:
   2000/525 + 35/525 = 2000 + 35/525 = 2035/525
5. 2035/525 simplified gives 407/105
6. So, 80/21 + 5/75 = 407/105
   In mixed form: 392/105

MathStep (Works offline)

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

Related: ⁸⁰/₂₁+¹⁰/₇₅ ⁸⁰/₄₂+⁵/₇₅ ⁸⁰/₂₁+¹⁵/₇₅ ⁸⁰/₆₃+⁵/₇₅ ⁸⁰/₂₁+²⁵/₇₅ ⁸⁰/₂₁+³⁵/₇₅

Add Fractions Calculator