Answers

Subtract 8/42 from 7/8

7/8 - 8/42 is 115/168.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 42 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 8 × 21 = 168,
   7/8 = 7 × 21/8 × 21 = 147/168
3. Likewise, for the 2nd fraction, since 42 × 4 = 168,
   8/42 = 8 × 4/42 × 4 = 32/168
4. Subtract the two like fractions:
   147/168 - 32/168 = 147 - 32/168 = 115/168

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