Answers

Subtract 18/40 from 90/80

1^st number: 1 10/80, 2^nd number: 18/40

90/80 - 18/40 is 27/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 40 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 80 × 1 = 80,
   90/80 = 90 × 1/80 × 1 = 90/80
3. Likewise, for the 2nd fraction, since 40 × 2 = 80,
   18/40 = 18 × 2/40 × 2 = 36/80
4. Subtract the two like fractions:
   90/80 - 36/80 = 90 - 36/80 = 54/80
5. After reducing the fraction, the answer is 27/40

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