Answers

Subtract 90/4 from 20/10

1^st number: 2 0/10, 2^nd number: 22 2/4

20/10 - 90/4 is -41/2.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 4 is 20
   
   Next, find the equivalent fraction of both fractional numbers with denominator 20
2. For the 1st fraction, since 10 × 2 = 20,
   20/10 = 20 × 2/10 × 2 = 40/20
3. Likewise, for the 2nd fraction, since 4 × 5 = 20,
   90/4 = 90 × 5/4 × 5 = 450/20
4. Subtract the two like fractions:
   40/20 - 450/20 = 40 - 450/20 = -410/20
5. After reducing the fraction, the answer is -41/2

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