Answers

Subtract 64/90 from 42/25

1^st number: 1 17/25, 2^nd number: 64/90

42/25 - 64/90 is 218/225.

Steps for subtracting 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,
   64/90 = 64 × 5/90 × 5 = 320/450
4. Subtract the two like fractions:
   756/450 - 320/450 = 756 - 320/450 = 436/450
5. After reducing the fraction, the answer is 218/225

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