Answers

Add 90/84 and 63/75

1^st number: 1 6/84, 2^nd number: 63/75

90/84 + 63/75 is 669/350.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 75 is 2100
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2100
2. For the 1st fraction, since 84 × 25 = 2100,
   90/84 = 90 × 25/84 × 25 = 2250/2100
3. Likewise, for the 2nd fraction, since 75 × 28 = 2100,
   63/75 = 63 × 28/75 × 28 = 1764/2100
4. Add the two like fractions:
   2250/2100 + 1764/2100 = 2250 + 1764/2100 = 4014/2100
5. 4014/2100 simplified gives 669/350
6. So, 90/84 + 63/75 = 669/350
   In mixed form: 1319/350

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