Answers

Add 90/63 and 20/72

1^st number: 1 27/63, 2^nd number: 20/72

90/63 + 20/72 is 215/126.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 63 × 8 = 504,
   90/63 = 90 × 8/63 × 8 = 720/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   20/72 = 20 × 7/72 × 7 = 140/504
4. Add the two like fractions:
   720/504 + 140/504 = 720 + 140/504 = 860/504
5. 860/504 simplified gives 215/126
6. So, 90/63 + 20/72 = 215/126
   In mixed form: 189/126

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