Answers

Subtract 50/42 from 18/27

1^st number: 18/27, 2^nd number: 1 8/42

18/27 - 50/42 is -11/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 42 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 27 × 14 = 378,
   18/27 = 18 × 14/27 × 14 = 252/378
3. Likewise, for the 2nd fraction, since 42 × 9 = 378,
   50/42 = 50 × 9/42 × 9 = 450/378
4. Subtract the two like fractions:
   252/378 - 450/378 = 252 - 450/378 = -198/378
5. After reducing the fraction, the answer is -11/21

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