Answers

Subtract 35/98 from 20/72

20/72 - 35/98 is -5/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 98 is 3528
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3528
2. For the 1st fraction, since 72 × 49 = 3528,
   20/72 = 20 × 49/72 × 49 = 980/3528
3. Likewise, for the 2nd fraction, since 98 × 36 = 3528,
   35/98 = 35 × 36/98 × 36 = 1260/3528
4. Subtract the two like fractions:
   980/3528 - 1260/3528 = 980 - 1260/3528 = -280/3528
5. After reducing the fraction, the answer is -5/63

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