Answers

Add 42/25 and 15/90

1^st number: 1 17/25, 2^nd number: 15/90

42/25 + 15/90 is 277/150.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 25 and 90 is 450
   
   Next, find the equivalent fraction of both fractional numbers with denominator 450
2. For the 1st fraction, since 25 × 18 = 450,
   42/25 = 42 × 18/25 × 18 = 756/450
3. Likewise, for the 2nd fraction, since 90 × 5 = 450,
   15/90 = 15 × 5/90 × 5 = 75/450
4. Add the two like fractions:
   756/450 + 75/450 = 756 + 75/450 = 831/450
5. 831/450 simplified gives 277/150
6. So, 42/25 + 15/90 = 277/150
   In mixed form: 1127/150

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