Answers

Add 1/4 and 4/5

1/4 + 4/5 is 21/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 5 is 20
2. For the 1st fraction, since 4 × 5 = 20,
   1/4 = 1 × 5/4 × 5 = 5/20
3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
   4/5 = 4 × 4/5 × 4 = 16/20
4. Add the two fractions:
   5/20 + 16/20 = 5 + 16/20 = 21/20
5. In mixed form: 11/20

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