Answers

Subtract 49/45 from 81/80

1^st number: 1 1/80, 2^nd number: 1 4/45

81/80 - 49/45 is -11/144.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 45 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 80 × 9 = 720,
   81/80 = 81 × 9/80 × 9 = 729/720
3. Likewise, for the 2nd fraction, since 45 × 16 = 720,
   49/45 = 49 × 16/45 × 16 = 784/720
4. Subtract the two like fractions:
   729/720 - 784/720 = 729 - 784/720 = -55/720
5. After reducing the fraction, the answer is -11/144

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