Answers

Subtract 35/12 from 42/80

1^st number: 42/80, 2^nd number: 2 11/12

42/80 - 35/12 is -287/120.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 12 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 80 × 3 = 240,
   42/80 = 42 × 3/80 × 3 = 126/240
3. Likewise, for the 2nd fraction, since 12 × 20 = 240,
   35/12 = 35 × 20/12 × 20 = 700/240
4. Subtract the two like fractions:
   126/240 - 700/240 = 126 - 700/240 = -574/240
5. After reducing the fraction, the answer is -287/120

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