Answers

Subtract 42/80 from 7/75

7/75 - 42/80 is -259/600.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 80 is 1200
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1200
2. For the 1st fraction, since 75 × 16 = 1200,
   7/75 = 7 × 16/75 × 16 = 112/1200
3. Likewise, for the 2nd fraction, since 80 × 15 = 1200,
   42/80 = 42 × 15/80 × 15 = 630/1200
4. Subtract the two like fractions:
   112/1200 - 630/1200 = 112 - 630/1200 = -518/1200
5. After reducing the fraction, the answer is -259/600

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