Answers

Add 90/15 and 49/63

1^st number: 6 0/15, 2^nd number: 49/63

90/15 + 49/63 is 61/9.

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,
   49/63 = 49 × 5/63 × 5 = 245/315
4. Add the two like fractions:
   1890/315 + 245/315 = 1890 + 245/315 = 2135/315
5. 2135/315 simplified gives 61/9
6. So, 90/15 + 49/63 = 61/9
   In mixed form: 67/9

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