Answers

Add 42/10 and 84/63

1^st number: 4 2/10, 2^nd number: 1 21/63

42/10 + 84/63 is 83/15.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 63 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 10 × 63 = 630,
   42/10 = 42 × 63/10 × 63 = 2646/630
3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
   84/63 = 84 × 10/63 × 10 = 840/630
4. Add the two like fractions:
   2646/630 + 840/630 = 2646 + 840/630 = 3486/630
5. 3486/630 simplified gives 83/15
6. So, 42/10 + 84/63 = 83/15
   In mixed form: 58/15

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