Answers

Subtract 54/70 from 27/40

27/40 - 54/70 is -27/280.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 70 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 40 × 7 = 280,
   27/40 = 27 × 7/40 × 7 = 189/280
3. Likewise, for the 2nd fraction, since 70 × 4 = 280,
   54/70 = 54 × 4/70 × 4 = 216/280
4. Subtract the two like fractions:
   189/280 - 216/280 = 189 - 216/280 = -27/280

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