Answers

Subtract 45/98 from 18/70

18/70 - 45/98 is -99/490.

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,
   18/70 = 18 × 7/70 × 7 = 126/490
3. Likewise, for the 2nd fraction, since 98 × 5 = 490,
   45/98 = 45 × 5/98 × 5 = 225/490
4. Subtract the two like fractions:
   126/490 - 225/490 = 126 - 225/490 = -99/490

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