Answers

Subtract 15/90 from 20/49

20/49 - 15/90 is 71/294.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 49 and 90 is 4410
   
   Next, find the equivalent fraction of both fractional numbers with denominator 4410
2. For the 1st fraction, since 49 × 90 = 4410,
   20/49 = 20 × 90/49 × 90 = 1800/4410
3. Likewise, for the 2nd fraction, since 90 × 49 = 4410,
   15/90 = 15 × 49/90 × 49 = 735/4410
4. Subtract the two like fractions:
   1800/4410 - 735/4410 = 1800 - 735/4410 = 1065/4410
5. After reducing the fraction, the answer is 71/294

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