Answers

Subtract 42/18 from 40/49

1^st number: 40/49, 2^nd number: 2 6/18

40/49 - 42/18 is -223/147.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 49 and 18 is 882
   
   Next, find the equivalent fraction of both fractional numbers with denominator 882
2. For the 1st fraction, since 49 × 18 = 882,
   40/49 = 40 × 18/49 × 18 = 720/882
3. Likewise, for the 2nd fraction, since 18 × 49 = 882,
   42/18 = 42 × 49/18 × 49 = 2058/882
4. Subtract the two like fractions:
   720/882 - 2058/882 = 720 - 2058/882 = -1338/882
5. After reducing the fraction, the answer is -223/147

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