Answers

Add 90/63 and 42/56

1^st number: 1 27/63, 2^nd number: 42/56

90/63 + 42/56 is 61/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 56 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 56 × 9 = 504,
   42/56 = 42 × 9/56 × 9 = 378/504
4. Add the two like fractions:
   720/504 + 378/504 = 720 + 378/504 = 1098/504
5. 1098/504 simplified gives 61/28
6. So, 90/63 + 42/56 = 61/28
   In mixed form: 25/28

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