Answers

Subtract 70/42 from 18/25

1^st number: 18/25, 2^nd number: 1 28/42

18/25 - 70/42 is -71/75.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 25 and 42 is 1050
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1050
2. For the 1st fraction, since 25 × 42 = 1050,
   18/25 = 18 × 42/25 × 42 = 756/1050
3. Likewise, for the 2nd fraction, since 42 × 25 = 1050,
   70/42 = 70 × 25/42 × 25 = 1750/1050
4. Subtract the two like fractions:
   756/1050 - 1750/1050 = 756 - 1750/1050 = -994/1050
5. After reducing the fraction, the answer is -71/75

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