Answers

Subtract 28/80 from 98/90

1^st number: 1 8/90, 2^nd number: 28/80

98/90 - 28/80 is 133/180.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 90 × 8 = 720,
   98/90 = 98 × 8/90 × 8 = 784/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   28/80 = 28 × 9/80 × 9 = 252/720
4. Subtract the two like fractions:
   784/720 - 252/720 = 784 - 252/720 = 532/720
5. After reducing the fraction, the answer is 133/180

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