Answers

Add 90/84 and 4/63

1^st number: 1 6/84, 2^nd number: 4/63

90/84 + 4/63 is 143/126.

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,
   90/84 = 90 × 3/84 × 3 = 270/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   4/63 = 4 × 4/63 × 4 = 16/252
4. Add the two like fractions:
   270/252 + 16/252 = 270 + 16/252 = 286/252
5. 286/252 simplified gives 143/126
6. So, 90/84 + 4/63 = 143/126
   In mixed form: 117/126

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