Answers

Subtract 4/98 from 21/70

21/70 - 4/98 is 127/490.

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,
   21/70 = 21 × 7/70 × 7 = 147/490
3. Likewise, for the 2nd fraction, since 98 × 5 = 490,
   4/98 = 4 × 5/98 × 5 = 20/490
4. Subtract the two like fractions:
   147/490 - 20/490 = 147 - 20/490 = 127/490

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