Answers

Add 7/90 and 63/21

1^st number: 7/90, 2^nd number: 3 0/21

7/90 + 63/21 is 277/90.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 21 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 90 × 7 = 630,
   7/90 = 7 × 7/90 × 7 = 49/630
3. Likewise, for the 2nd fraction, since 21 × 30 = 630,
   63/21 = 63 × 30/21 × 30 = 1890/630
4. Add the two like fractions:
   49/630 + 1890/630 = 49 + 1890/630 = 1939/630
5. 1939/630 simplified gives 277/90
6. So, 7/90 + 63/21 = 277/90
   In mixed form: 37/90

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