Answers

Subtract 40/56 from 18/80

18/80 - 40/56 is -137/280.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 56 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 80 × 7 = 560,
   18/80 = 18 × 7/80 × 7 = 126/560
3. Likewise, for the 2nd fraction, since 56 × 10 = 560,
   40/56 = 40 × 10/56 × 10 = 400/560
4. Subtract the two like fractions:
   126/560 - 400/560 = 126 - 400/560 = -274/560
5. After reducing the fraction, the answer is -137/280

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