Answers

Subtract 63/98 from 25/70

25/70 - 63/98 is -2/7.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 98 is 490
   
   Next, find the equivalent fraction of both fractional numbers with denominator 490
2. For the 1st fraction, since 70 × 7 = 490,
   25/70 = 25 × 7/70 × 7 = 175/490
3. Likewise, for the 2nd fraction, since 98 × 5 = 490,
   63/98 = 63 × 5/98 × 5 = 315/490
4. Subtract the two like fractions:
   175/490 - 315/490 = 175 - 315/490 = -140/490
5. After reducing the fraction, the answer is -2/7

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