Answers

Add 90/15 and 45/63

1^st number: 6 0/15, 2^nd number: 45/63

90/15 + 45/63 is 47/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 63 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 15 × 21 = 315,
   90/15 = 90 × 21/15 × 21 = 1890/315
3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
   45/63 = 45 × 5/63 × 5 = 225/315
4. Add the two like fractions:
   1890/315 + 225/315 = 1890 + 225/315 = 2115/315
5. 2115/315 simplified gives 47/7
6. So, 90/15 + 45/63 = 47/7
   In mixed form: 65/7

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