Answers

Subtract 6/72 from 3/42

3/42 - 6/72 is -1/84.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 42 × 12 = 504,
   3/42 = 3 × 12/42 × 12 = 36/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   6/72 = 6 × 7/72 × 7 = 42/504
4. Subtract the two like fractions:
   36/504 - 42/504 = 36 - 42/504 = -6/504
5. After reducing the fraction, the answer is -1/84

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