Answers

Add 18/60 and 90/63

1^st number: 18/60, 2^nd number: 1 27/63

18/60 + 90/63 is 121/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 63 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 60 × 21 = 1260,
   18/60 = 18 × 21/60 × 21 = 378/1260
3. Likewise, for the 2nd fraction, since 63 × 20 = 1260,
   90/63 = 90 × 20/63 × 20 = 1800/1260
4. Add the two like fractions:
   378/1260 + 1800/1260 = 378 + 1800/1260 = 2178/1260
5. 2178/1260 simplified gives 121/70
6. So, 18/60 + 90/63 = 121/70
   In mixed form: 151/70

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