Answers

Subtract 42/20 from 84/15

1^st number: 5 9/15, 2^nd number: 2 2/20

84/15 - 42/20 is 7/2.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 20 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 15 × 4 = 60,
   84/15 = 84 × 4/15 × 4 = 336/60
3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
   42/20 = 42 × 3/20 × 3 = 126/60
4. Subtract the two like fractions:
   336/60 - 126/60 = 336 - 126/60 = 210/60
5. After reducing the fraction, the answer is 7/2
6. In mixed form: 31/2

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