Answers

Subtract 25/50 from 18/70

18/70 - 25/50 is -17/70.

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,
   18/70 = 18 × 5/70 × 5 = 90/350
3. Likewise, for the 2nd fraction, since 50 × 7 = 350,
   25/50 = 25 × 7/50 × 7 = 175/350
4. Subtract the two like fractions:
   90/350 - 175/350 = 90 - 175/350 = -85/350
5. After reducing the fraction, the answer is -17/70

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