Answers

Subtract 42/75 from 1/84

1/84 - 42/75 is -1151/2100.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 75 is 2100
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2100
2. For the 1st fraction, since 84 × 25 = 2100,
   1/84 = 1 × 25/84 × 25 = 25/2100
3. Likewise, for the 2nd fraction, since 75 × 28 = 2100,
   42/75 = 42 × 28/75 × 28 = 1176/2100
4. Subtract the two like fractions:
   25/2100 - 1176/2100 = 25 - 1176/2100 = -1151/2100

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