Answers

Add 21/20 and 7/40

1^st number: 1 1/20, 2^nd number: 7/40

21/20 + 7/40 is 49/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 40 is 40
   
   Next, find the equivalent fraction of both fractional numbers with denominator 40
2. For the 1st fraction, since 20 × 2 = 40,
   21/20 = 21 × 2/20 × 2 = 42/40
3. Likewise, for the 2nd fraction, since 40 × 1 = 40,
   7/40 = 7 × 1/40 × 1 = 7/40
4. Add the two like fractions:
   42/40 + 7/40 = 42 + 7/40 = 49/40
5. So, 21/20 + 7/40 = 49/40
   In mixed form: 19/40

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