Answers

Subtract 49/16 from 40/42

1^st number: 40/42, 2^nd number: 3 1/16

40/42 - 49/16 is -709/336.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 16 is 336
   
   Next, find the equivalent fraction of both fractional numbers with denominator 336
2. For the 1st fraction, since 42 × 8 = 336,
   40/42 = 40 × 8/42 × 8 = 320/336
3. Likewise, for the 2nd fraction, since 16 × 21 = 336,
   49/16 = 49 × 21/16 × 21 = 1029/336
4. Subtract the two like fractions:
   320/336 - 1029/336 = 320 - 1029/336 = -709/336

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