Answers

Subtract 15/30 from 42/72

42/72 - 15/30 is 1/12.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 30 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 72 × 5 = 360,
   42/72 = 42 × 5/72 × 5 = 210/360
3. Likewise, for the 2nd fraction, since 30 × 12 = 360,
   15/30 = 15 × 12/30 × 12 = 180/360
4. Subtract the two like fractions:
   210/360 - 180/360 = 210 - 180/360 = 30/360
5. After reducing the fraction, the answer is 1/12

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