Answers

Add 63/80 and 42/10

1^st number: 63/80, 2^nd number: 4 2/10

63/80 + 42/10 is 399/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 10 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 80 × 1 = 80,
   63/80 = 63 × 1/80 × 1 = 63/80
3. Likewise, for the 2nd fraction, since 10 × 8 = 80,
   42/10 = 42 × 8/10 × 8 = 336/80
4. Add the two like fractions:
   63/80 + 336/80 = 63 + 336/80 = 399/80
5. So, 63/80 + 42/10 = 399/80
   In mixed form: 479/80

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