Answers

Add 3/84 and 90/63

1^st number: 3/84, 2^nd number: 1 27/63

3/84 + 90/63 is 41/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 63 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 84 × 3 = 252,
   3/84 = 3 × 3/84 × 3 = 9/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   90/63 = 90 × 4/63 × 4 = 360/252
4. Add the two like fractions:
   9/252 + 360/252 = 9 + 360/252 = 369/252
5. 369/252 simplified gives 41/28
6. So, 3/84 + 90/63 = 41/28
   In mixed form: 113/28

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