Answers

Subtract 25/50 from 90/20

1^st number: 4 10/20, 2^nd number: 25/50

90/20 - 25/50 is 4/1.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 50 is 100
   
   Next, find the equivalent fraction of both fractional numbers with denominator 100
2. For the 1st fraction, since 20 × 5 = 100,
   90/20 = 90 × 5/20 × 5 = 450/100
3. Likewise, for the 2nd fraction, since 50 × 2 = 100,
   25/50 = 25 × 2/50 × 2 = 50/100
4. Subtract the two like fractions:
   450/100 - 50/100 = 450 - 50/100 = 400/100
5. After reducing the fraction, the answer is 4/1

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