Answers

Add 49/42 and 4/90

1^st number: 1 7/42, 2^nd number: 4/90

49/42 + 4/90 is 109/90.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 42 × 15 = 630,
   49/42 = 49 × 15/42 × 15 = 735/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   4/90 = 4 × 7/90 × 7 = 28/630
4. Add the two like fractions:
   735/630 + 28/630 = 735 + 28/630 = 763/630
5. 763/630 simplified gives 109/90
6. So, 49/42 + 4/90 = 109/90
   In mixed form: 119/90

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