Answers

Subtract 42/70 from 3/49

3/49 - 42/70 is -132/245.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 49 and 70 is 490
   
   Next, find the equivalent fraction of both fractional numbers with denominator 490
2. For the 1st fraction, since 49 × 10 = 490,
   3/49 = 3 × 10/49 × 10 = 30/490
3. Likewise, for the 2nd fraction, since 70 × 7 = 490,
   42/70 = 42 × 7/70 × 7 = 294/490
4. Subtract the two like fractions:
   30/490 - 294/490 = 30 - 294/490 = -264/490
5. After reducing the fraction, the answer is -132/245

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