Answers

Add 15/90 and 84/63

1^st number: 15/90, 2^nd number: 1 21/63

15/90 + 84/63 is 3/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 63 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 90 × 7 = 630,
   15/90 = 15 × 7/90 × 7 = 105/630
3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
   84/63 = 84 × 10/63 × 10 = 840/630
4. Add the two like fractions:
   105/630 + 840/630 = 105 + 840/630 = 945/630
5. 945/630 simplified gives 3/2
6. So, 15/90 + 84/63 = 3/2
   In mixed form: 11/2

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