Answers

Subtract 42/54 from 50/84

50/84 - 42/54 is -23/126.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 54 is 756
   
   Next, find the equivalent fraction of both fractional numbers with denominator 756
2. For the 1st fraction, since 84 × 9 = 756,
   50/84 = 50 × 9/84 × 9 = 450/756
3. Likewise, for the 2nd fraction, since 54 × 14 = 756,
   42/54 = 42 × 14/54 × 14 = 588/756
4. Subtract the two like fractions:
   450/756 - 588/756 = 450 - 588/756 = -138/756
5. After reducing the fraction, the answer is -23/126

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