Answers

Subtract 90/50 from 98/20

1^st number: 4 18/20, 2^nd number: 1 40/50

98/20 - 90/50 is 31/10.

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,
   98/20 = 98 × 5/20 × 5 = 490/100
3. Likewise, for the 2nd fraction, since 50 × 2 = 100,
   90/50 = 90 × 2/50 × 2 = 180/100
4. Subtract the two like fractions:
   490/100 - 180/100 = 490 - 180/100 = 310/100
5. After reducing the fraction, the answer is 31/10
6. In mixed form: 31/10

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