Answers

Subtract 90/50 from 20/49

1^st number: 20/49, 2^nd number: 1 40/50

20/49 - 90/50 is -341/245.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 49 and 50 is 2450
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2450
2. For the 1st fraction, since 49 × 50 = 2450,
   20/49 = 20 × 50/49 × 50 = 1000/2450
3. Likewise, for the 2nd fraction, since 50 × 49 = 2450,
   90/50 = 90 × 49/50 × 49 = 4410/2450
4. Subtract the two like fractions:
   1000/2450 - 4410/2450 = 1000 - 4410/2450 = -3410/2450
5. After reducing the fraction, the answer is -341/245

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