Answers

Add 2/80 and 63/21

1^st number: 2/80, 2^nd number: 3 0/21

2/80 + 63/21 is 121/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 21 is 1680
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1680
2. For the 1st fraction, since 80 × 21 = 1680,
   2/80 = 2 × 21/80 × 21 = 42/1680
3. Likewise, for the 2nd fraction, since 21 × 80 = 1680,
   63/21 = 63 × 80/21 × 80 = 5040/1680
4. Add the two like fractions:
   42/1680 + 5040/1680 = 42 + 5040/1680 = 5082/1680
5. 5082/1680 simplified gives 121/40
6. So, 2/80 + 63/21 = 121/40
   In mixed form: 31/40

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