Answers

Add 3/90 and 72/63

1^st number: 3/90, 2^nd number: 1 9/63

3/90 + 72/63 is 247/210.

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,
   3/90 = 3 × 7/90 × 7 = 21/630
3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
   72/63 = 72 × 10/63 × 10 = 720/630
4. Add the two like fractions:
   21/630 + 720/630 = 21 + 720/630 = 741/630
5. 741/630 simplified gives 247/210
6. So, 3/90 + 72/63 = 247/210
   In mixed form: 137/210

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