Answers

Add 84/63 and 21/5

1^st number: 1 21/63, 2^nd number: 4 1/5

84/63 + 21/5 is 83/15.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 5 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 63 × 5 = 315,
   84/63 = 84 × 5/63 × 5 = 420/315
3. Likewise, for the 2nd fraction, since 5 × 63 = 315,
   21/5 = 21 × 63/5 × 63 = 1323/315
4. Add the two like fractions:
   420/315 + 1323/315 = 420 + 1323/315 = 1743/315
5. 1743/315 simplified gives 83/15
6. So, 84/63 + 21/5 = 83/15
   In mixed form: 58/15

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