Answers

Subtract 42/54 from 2/7

2/7 - 42/54 is -31/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 54 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 7 × 54 = 378,
   2/7 = 2 × 54/7 × 54 = 108/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   42/54 = 42 × 7/54 × 7 = 294/378
4. Subtract the two like fractions:
   108/378 - 294/378 = 108 - 294/378 = -186/378
5. After reducing the fraction, the answer is -31/63

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