Answers

Add 4/20 and 21/80

4/20 + 21/80 is 37/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 80 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 20 × 4 = 80,
   4/20 = 4 × 4/20 × 4 = 16/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   21/80 = 21 × 1/80 × 1 = 21/80
4. Add the two like fractions:
   16/80 + 21/80 = 16 + 21/80 = 37/80
5. So, 4/20 + 21/80 = 37/80

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