Answers

Add 2/90 and 72/63

1^st number: 2/90, 2^nd number: 1 9/63

2/90 + 72/63 is 367/315.

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,
   2/90 = 2 × 7/90 × 7 = 14/630
3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
   72/63 = 72 × 10/63 × 10 = 720/630
4. Add the two like fractions:
   14/630 + 720/630 = 14 + 720/630 = 734/630
5. 734/630 simplified gives 367/315
6. So, 2/90 + 72/63 = 367/315
   In mixed form: 152/315

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