Answers

Add 20/75 and 21/20

1^st number: 20/75, 2^nd number: 1 1/20

20/75 + 21/20 is 79/60.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 20 is 300
   
   Next, find the equivalent fraction of both fractional numbers with denominator 300
2. For the 1st fraction, since 75 × 4 = 300,
   20/75 = 20 × 4/75 × 4 = 80/300
3. Likewise, for the 2nd fraction, since 20 × 15 = 300,
   21/20 = 21 × 15/20 × 15 = 315/300
4. Add the two like fractions:
   80/300 + 315/300 = 80 + 315/300 = 395/300
5. 395/300 simplified gives 79/60
6. So, 20/75 + 21/20 = 79/60
   In mixed form: 119/60

MathStep (Works offline)

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

Related: ⁴⁰/₇₅+²¹/₂₀ ²⁰/₇₅+⁴²/₂₀ ²⁰/₇₅+²¹/₄₀ ⁶⁰/₇₅+²¹/₂₀ ²⁰/₇₅+⁶³/₂₀ ²⁰/₇₅+²¹/₆₀

Add Fractions Calculator