Answers

Add 40/25 and 42/90

1^st number: 1 15/25, 2^nd number: 42/90

40/25 + 42/90 is 31/15.

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,
   40/25 = 40 × 18/25 × 18 = 720/450
3. Likewise, for the 2nd fraction, since 90 × 5 = 450,
   42/90 = 42 × 5/90 × 5 = 210/450
4. Add the two like fractions:
   720/450 + 210/450 = 720 + 210/450 = 930/450
5. 930/450 simplified gives 31/15
6. So, 40/25 + 42/90 = 31/15
   In mixed form: 21/15

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