Answers

Subtract 90/50 from 72/98

1^st number: 72/98, 2^nd number: 1 40/50

72/98 - 90/50 is -261/245.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 50 is 2450
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2450
2. For the 1st fraction, since 98 × 25 = 2450,
   72/98 = 72 × 25/98 × 25 = 1800/2450
3. Likewise, for the 2nd fraction, since 50 × 49 = 2450,
   90/50 = 90 × 49/50 × 49 = 4410/2450
4. Subtract the two like fractions:
   1800/2450 - 4410/2450 = 1800 - 4410/2450 = -2610/2450
5. After reducing the fraction, the answer is -261/245

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