Answers

Add 63/90 and 21/7

1^st number: 63/90, 2^nd number: 3 0/7

63/90 + 21/7 is 37/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 7 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 90 × 7 = 630,
   63/90 = 63 × 7/90 × 7 = 441/630
3. Likewise, for the 2nd fraction, since 7 × 90 = 630,
   21/7 = 21 × 90/7 × 90 = 1890/630
4. Add the two like fractions:
   441/630 + 1890/630 = 441 + 1890/630 = 2331/630
5. 2331/630 simplified gives 37/10
6. So, 63/90 + 21/7 = 37/10
   In mixed form: 37/10

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