Answers

Add 12/63 and 90/45

1^st number: 12/63, 2^nd number: 2 0/45

12/63 + 90/45 is 46/21.

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,
   12/63 = 12 × 5/63 × 5 = 60/315
3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
   90/45 = 90 × 7/45 × 7 = 630/315
4. Add the two like fractions:
   60/315 + 630/315 = 60 + 630/315 = 690/315
5. 690/315 simplified gives 46/21
6. So, 12/63 + 90/45 = 46/21
   In mixed form: 24/21

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