Answers

Subtract 48/72 from 18/28

18/28 - 48/72 is -1/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 28 × 18 = 504,
   18/28 = 18 × 18/28 × 18 = 324/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   48/72 = 48 × 7/72 × 7 = 336/504
4. Subtract the two like fractions:
   324/504 - 336/504 = 324 - 336/504 = -12/504
5. After reducing the fraction, the answer is -1/42

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