Answers

Add 84/63 and 12/45

1^st number: 1 21/63, 2^nd number: 12/45

84/63 + 12/45 is 8/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 45 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 45 × 7 = 315,
   12/45 = 12 × 7/45 × 7 = 84/315
4. Add the two like fractions:
   420/315 + 84/315 = 420 + 84/315 = 504/315
5. 504/315 simplified gives 8/5
6. So, 84/63 + 12/45 = 8/5
   In mixed form: 13/5

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