Answers

Add 40/20 and 45/21

1^st number: 2 0/20, 2^nd number: 2 3/21

40/20 + 45/21 is 29/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 21 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 20 × 21 = 420,
   40/20 = 40 × 21/20 × 21 = 840/420
3. Likewise, for the 2nd fraction, since 21 × 20 = 420,
   45/21 = 45 × 20/21 × 20 = 900/420
4. Add the two like fractions:
   840/420 + 900/420 = 840 + 900/420 = 1740/420
5. 1740/420 simplified gives 29/7
6. So, 40/20 + 45/21 = 29/7
   In mixed form: 41/7

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