Answers

Add 90/42 and 63/72

1^st number: 2 6/42, 2^nd number: 63/72

90/42 + 63/72 is 169/56.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 42 × 12 = 504,
   90/42 = 90 × 12/42 × 12 = 1080/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   63/72 = 63 × 7/72 × 7 = 441/504
4. Add the two like fractions:
   1080/504 + 441/504 = 1080 + 441/504 = 1521/504
5. 1521/504 simplified gives 169/56
6. So, 90/42 + 63/72 = 169/56
   In mixed form: 31/56

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