Answers

Subtract 42/40 from 84/25

1^st number: 3 9/25, 2^nd number: 1 2/40

84/25 - 42/40 is 231/100.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 25 and 40 is 200
   
   Next, find the equivalent fraction of both fractional numbers with denominator 200
2. For the 1st fraction, since 25 × 8 = 200,
   84/25 = 84 × 8/25 × 8 = 672/200
3. Likewise, for the 2nd fraction, since 40 × 5 = 200,
   42/40 = 42 × 5/40 × 5 = 210/200
4. Subtract the two like fractions:
   672/200 - 210/200 = 672 - 210/200 = 462/200
5. After reducing the fraction, the answer is 231/100
6. In mixed form: 231/100

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