Answers

Subtract 15/42 from 84/40

1^st number: 2 4/40, 2^nd number: 15/42

84/40 - 15/42 is 61/35.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 42 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 40 × 21 = 840,
   84/40 = 84 × 21/40 × 21 = 1764/840
3. Likewise, for the 2nd fraction, since 42 × 20 = 840,
   15/42 = 15 × 20/42 × 20 = 300/840
4. Subtract the two like fractions:
   1764/840 - 300/840 = 1764 - 300/840 = 1464/840
5. After reducing the fraction, the answer is 61/35
6. In mixed form: 126/35

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