Answers

Add 54/42 and 90/25

1^st number: 1 12/42, 2^nd number: 3 15/25

54/42 + 90/25 is 171/35.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 25 is 1050
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1050
2. For the 1st fraction, since 42 × 25 = 1050,
   54/42 = 54 × 25/42 × 25 = 1350/1050
3. Likewise, for the 2nd fraction, since 25 × 42 = 1050,
   90/25 = 90 × 42/25 × 42 = 3780/1050
4. Add the two like fractions:
   1350/1050 + 3780/1050 = 1350 + 3780/1050 = 5130/1050
5. 5130/1050 simplified gives 171/35
6. So, 54/42 + 90/25 = 171/35
   In mixed form: 431/35

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