Answers

Add 21/90 and 63/20

1^st number: 21/90, 2^nd number: 3 3/20

21/90 + 63/20 is 203/60.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 20 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 90 × 2 = 180,
   21/90 = 21 × 2/90 × 2 = 42/180
3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
   63/20 = 63 × 9/20 × 9 = 567/180
4. Add the two like fractions:
   42/180 + 567/180 = 42 + 567/180 = 609/180
5. 609/180 simplified gives 203/60
6. So, 21/90 + 63/20 = 203/60
   In mixed form: 323/60

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