Answers

Subtract 56/84 from 45/75

45/75 - 56/84 is -1/15.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 84 is 2100
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2100
2. For the 1st fraction, since 75 × 28 = 2100,
   45/75 = 45 × 28/75 × 28 = 1260/2100
3. Likewise, for the 2nd fraction, since 84 × 25 = 2100,
   56/84 = 56 × 25/84 × 25 = 1400/2100
4. Subtract the two like fractions:
   1260/2100 - 1400/2100 = 1260 - 1400/2100 = -140/2100
5. After reducing the fraction, the answer is -1/15

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