Answers

Subtract 70/45 from 42/50

1^st number: 42/50, 2^nd number: 1 25/45

42/50 - 70/45 is -161/225.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 45 is 450
   
   Next, find the equivalent fraction of both fractional numbers with denominator 450
2. For the 1st fraction, since 50 × 9 = 450,
   42/50 = 42 × 9/50 × 9 = 378/450
3. Likewise, for the 2nd fraction, since 45 × 10 = 450,
   70/45 = 70 × 10/45 × 10 = 700/450
4. Subtract the two like fractions:
   378/450 - 700/450 = 378 - 700/450 = -322/450
5. After reducing the fraction, the answer is -161/225

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