Answers

Subtract 9/4 from 42/10

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

42/10 - 9/4 is 39/20.

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,
   42/10 = 42 × 2/10 × 2 = 84/20
3. Likewise, for the 2nd fraction, since 4 × 5 = 20,
   9/4 = 9 × 5/4 × 5 = 45/20
4. Subtract the two like fractions:
   84/20 - 45/20 = 84 - 45/20 = 39/20
5. In mixed form: 119/20

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