Answers

Subtract 28/70 from 15/98

15/98 - 28/70 is -121/490.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 70 is 490
   
   Next, find the equivalent fraction of both fractional numbers with denominator 490
2. For the 1st fraction, since 98 × 5 = 490,
   15/98 = 15 × 5/98 × 5 = 75/490
3. Likewise, for the 2nd fraction, since 70 × 7 = 490,
   28/70 = 28 × 7/70 × 7 = 196/490
4. Subtract the two like fractions:
   75/490 - 196/490 = 75 - 196/490 = -121/490

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