Answers

Subtract 42/40 from 24/84

1^st number: 24/84, 2^nd number: 1 2/40

24/84 - 42/40 is -107/140.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 84 × 10 = 840,
   24/84 = 24 × 10/84 × 10 = 240/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   42/40 = 42 × 21/40 × 21 = 882/840
4. Subtract the two like fractions:
   240/840 - 882/840 = 240 - 882/840 = -642/840
5. After reducing the fraction, the answer is -107/140

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