Answers

Subtract 15/75 from 20/28

20/28 - 15/75 is 18/35.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 75 is 2100
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2100
2. For the 1st fraction, since 28 × 75 = 2100,
   20/28 = 20 × 75/28 × 75 = 1500/2100
3. Likewise, for the 2nd fraction, since 75 × 28 = 2100,
   15/75 = 15 × 28/75 × 28 = 420/2100
4. Subtract the two like fractions:
   1500/2100 - 420/2100 = 1500 - 420/2100 = 1080/2100
5. After reducing the fraction, the answer is 18/35

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