Answers

Subtract 9/20 from 75/84

75/84 - 9/20 is 31/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 20 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   75/84 = 75 × 5/84 × 5 = 375/420
3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
   9/20 = 9 × 21/20 × 21 = 189/420
4. Subtract the two like fractions:
   375/420 - 189/420 = 375 - 189/420 = 186/420
5. After reducing the fraction, the answer is 31/70

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