Answers

Subtract 27/40 from 75/42

1^st number: 1 33/42, 2^nd number: 27/40

75/42 - 27/40 is 311/280.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 42 × 20 = 840,
   75/42 = 75 × 20/42 × 20 = 1500/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   27/40 = 27 × 21/40 × 21 = 567/840
4. Subtract the two like fractions:
   1500/840 - 567/840 = 1500 - 567/840 = 933/840
5. After reducing the fraction, the answer is 311/280
6. In mixed form: 131/280

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