Answers

Subtract 70/20 from 15/49

1^st number: 15/49, 2^nd number: 3 10/20

15/49 - 70/20 is -313/98.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 49 and 20 is 980
   
   Next, find the equivalent fraction of both fractional numbers with denominator 980
2. For the 1st fraction, since 49 × 20 = 980,
   15/49 = 15 × 20/49 × 20 = 300/980
3. Likewise, for the 2nd fraction, since 20 × 49 = 980,
   70/20 = 70 × 49/20 × 49 = 3430/980
4. Subtract the two like fractions:
   300/980 - 3430/980 = 300 - 3430/980 = -3130/980
5. After reducing the fraction, the answer is -313/98

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