Answers

Add 70/20 and 80/75

1^st number: 3 10/20, 2^nd number: 1 5/75

70/20 + 80/75 is 137/30.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 75 is 300
   
   Next, find the equivalent fraction of both fractional numbers with denominator 300
2. For the 1st fraction, since 20 × 15 = 300,
   70/20 = 70 × 15/20 × 15 = 1050/300
3. Likewise, for the 2nd fraction, since 75 × 4 = 300,
   80/75 = 80 × 4/75 × 4 = 320/300
4. Add the two like fractions:
   1050/300 + 320/300 = 1050 + 320/300 = 1370/300
5. 1370/300 simplified gives 137/30
6. So, 70/20 + 80/75 = 137/30
   In mixed form: 417/30

MathStep (Works offline)

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

Related: ⁷⁰/₄₀+⁸⁰/₇₅ ⁷⁰/₆₀+⁸⁰/₇₅

Add Fractions Calculator