Answers

Subtract 42/50 from 15/70

15/70 - 42/50 is -219/350.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 50 is 350
   
   Next, find the equivalent fraction of both fractional numbers with denominator 350
2. For the 1st fraction, since 70 × 5 = 350,
   15/70 = 15 × 5/70 × 5 = 75/350
3. Likewise, for the 2nd fraction, since 50 × 7 = 350,
   42/50 = 42 × 7/50 × 7 = 294/350
4. Subtract the two like fractions:
   75/350 - 294/350 = 75 - 294/350 = -219/350

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