Answers

Add 90/63 and 20/60

1^st number: 1 27/63, 2^nd number: 20/60

90/63 + 20/60 is 37/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 60 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 63 × 20 = 1260,
   90/63 = 90 × 20/63 × 20 = 1800/1260
3. Likewise, for the 2nd fraction, since 60 × 21 = 1260,
   20/60 = 20 × 21/60 × 21 = 420/1260
4. Add the two like fractions:
   1800/1260 + 420/1260 = 1800 + 420/1260 = 2220/1260
5. 2220/1260 simplified gives 37/21
6. So, 90/63 + 20/60 = 37/21
   In mixed form: 116/21

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