Answers

Subtract 81/84 from 42/48

42/48 - 81/84 is -5/56.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 48 and 84 is 336
   
   Next, find the equivalent fraction of both fractional numbers with denominator 336
2. For the 1st fraction, since 48 × 7 = 336,
   42/48 = 42 × 7/48 × 7 = 294/336
3. Likewise, for the 2nd fraction, since 84 × 4 = 336,
   81/84 = 81 × 4/84 × 4 = 324/336
4. Subtract the two like fractions:
   294/336 - 324/336 = 294 - 324/336 = -30/336
5. After reducing the fraction, the answer is -5/56

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