Answers

Add 90/72 and 20/63

1^st number: 1 18/72, 2^nd number: 20/63

90/72 + 20/63 is 395/252.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 63 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 72 × 7 = 504,
   90/72 = 90 × 7/72 × 7 = 630/504
3. Likewise, for the 2nd fraction, since 63 × 8 = 504,
   20/63 = 20 × 8/63 × 8 = 160/504
4. Add the two like fractions:
   630/504 + 160/504 = 630 + 160/504 = 790/504
5. 790/504 simplified gives 395/252
6. So, 90/72 + 20/63 = 395/252
   In mixed form: 1143/252

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