Answers

Subtract 45/75 from 18/56

18/56 - 45/75 is -39/140.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 75 is 4200
   
   Next, find the equivalent fraction of both fractional numbers with denominator 4200
2. For the 1st fraction, since 56 × 75 = 4200,
   18/56 = 18 × 75/56 × 75 = 1350/4200
3. Likewise, for the 2nd fraction, since 75 × 56 = 4200,
   45/75 = 45 × 56/75 × 56 = 2520/4200
4. Subtract the two like fractions:
   1350/4200 - 2520/4200 = 1350 - 2520/4200 = -1170/4200
5. After reducing the fraction, the answer is -39/140

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