Answers

Subtract 28/20 from 45/50

1^st number: 45/50, 2^nd number: 1 8/20

45/50 - 28/20 is -1/2.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 20 is 100
   
   Next, find the equivalent fraction of both fractional numbers with denominator 100
2. For the 1st fraction, since 50 × 2 = 100,
   45/50 = 45 × 2/50 × 2 = 90/100
3. Likewise, for the 2nd fraction, since 20 × 5 = 100,
   28/20 = 28 × 5/20 × 5 = 140/100
4. Subtract the two like fractions:
   90/100 - 140/100 = 90 - 140/100 = -50/100
5. After reducing the fraction, the answer is -1/2

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