Answers

Add 90/50 and 42/63

1^st number: 1 40/50, 2^nd number: 42/63

90/50 + 42/63 is 37/15.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 63 is 3150
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3150
2. For the 1st fraction, since 50 × 63 = 3150,
   90/50 = 90 × 63/50 × 63 = 5670/3150
3. Likewise, for the 2nd fraction, since 63 × 50 = 3150,
   42/63 = 42 × 50/63 × 50 = 2100/3150
4. Add the two like fractions:
   5670/3150 + 2100/3150 = 5670 + 2100/3150 = 7770/3150
5. 7770/3150 simplified gives 37/15
6. So, 90/50 + 42/63 = 37/15
   In mixed form: 27/15

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