Answers

Subtract 42/48 from 25/45

25/45 - 42/48 is -23/72.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 48 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 45 × 16 = 720,
   25/45 = 25 × 16/45 × 16 = 400/720
3. Likewise, for the 2nd fraction, since 48 × 15 = 720,
   42/48 = 42 × 15/48 × 15 = 630/720
4. Subtract the two like fractions:
   400/720 - 630/720 = 400 - 630/720 = -230/720
5. After reducing the fraction, the answer is -23/72

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