Answers

Subtract 80/49 from 90/84

1^st number: 1 6/84, 2^nd number: 1 31/49

90/84 - 80/49 is -55/98.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 49 is 588
   
   Next, find the equivalent fraction of both fractional numbers with denominator 588
2. For the 1st fraction, since 84 × 7 = 588,
   90/84 = 90 × 7/84 × 7 = 630/588
3. Likewise, for the 2nd fraction, since 49 × 12 = 588,
   80/49 = 80 × 12/49 × 12 = 960/588
4. Subtract the two like fractions:
   630/588 - 960/588 = 630 - 960/588 = -330/588
5. After reducing the fraction, the answer is -55/98

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