Answers

Subtract 42/75 from 3/40

3/40 - 42/75 is -97/200.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 75 is 600
   
   Next, find the equivalent fraction of both fractional numbers with denominator 600
2. For the 1st fraction, since 40 × 15 = 600,
   3/40 = 3 × 15/40 × 15 = 45/600
3. Likewise, for the 2nd fraction, since 75 × 8 = 600,
   42/75 = 42 × 8/75 × 8 = 336/600
4. Subtract the two like fractions:
   45/600 - 336/600 = 45 - 336/600 = -291/600
5. After reducing the fraction, the answer is -97/200

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