Answers

Subtract 18/28 from 27/80

27/80 - 18/28 is -171/560.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 28 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 80 × 7 = 560,
   27/80 = 27 × 7/80 × 7 = 189/560
3. Likewise, for the 2nd fraction, since 28 × 20 = 560,
   18/28 = 18 × 20/28 × 20 = 360/560
4. Subtract the two like fractions:
   189/560 - 360/560 = 189 - 360/560 = -171/560

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