Answers

Add 20/42 and 90/56

1^st number: 20/42, 2^nd number: 1 34/56

20/42 + 90/56 is 25/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 56 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 42 × 4 = 168,
   20/42 = 20 × 4/42 × 4 = 80/168
3. Likewise, for the 2nd fraction, since 56 × 3 = 168,
   90/56 = 90 × 3/56 × 3 = 270/168
4. Add the two like fractions:
   80/168 + 270/168 = 80 + 270/168 = 350/168
5. 350/168 simplified gives 25/12
6. So, 20/42 + 90/56 = 25/12
   In mixed form: 21/12

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