Answers

Subtract 42/4 from 90/10

1^st number: 9 0/10, 2^nd number: 10 2/4

90/10 - 42/4 is -3/2.

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,
   90/10 = 90 × 2/10 × 2 = 180/20
3. Likewise, for the 2nd fraction, since 4 × 5 = 20,
   42/4 = 42 × 5/4 × 5 = 210/20
4. Subtract the two like fractions:
   180/20 - 210/20 = 180 - 210/20 = -30/20
5. After reducing the fraction, the answer is -3/2

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