Answers

Add 90/63 and 84/45

1^st number: 1 27/63, 2^nd number: 1 39/45

90/63 + 84/45 is 346/105.

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,
   90/63 = 90 × 5/63 × 5 = 450/315
3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
   84/45 = 84 × 7/45 × 7 = 588/315
4. Add the two like fractions:
   450/315 + 588/315 = 450 + 588/315 = 1038/315
5. 1038/315 simplified gives 346/105
6. So, 90/63 + 84/45 = 346/105
   In mixed form: 331/105

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