Answers

Subtract 9/49 from 2/42

2/42 - 9/49 is -20/147.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 49 is 294
   
   Next, find the equivalent fraction of both fractional numbers with denominator 294
2. For the 1st fraction, since 42 × 7 = 294,
   2/42 = 2 × 7/42 × 7 = 14/294
3. Likewise, for the 2nd fraction, since 49 × 6 = 294,
   9/49 = 9 × 6/49 × 6 = 54/294
4. Subtract the two like fractions:
   14/294 - 54/294 = 14 - 54/294 = -40/294
5. After reducing the fraction, the answer is -20/147

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