Answers

Subtract 72/20 from 3/30

1^st number: 3/30, 2^nd number: 3 12/20

3/30 - 72/20 is -7/2.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 20 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 30 × 2 = 60,
   3/30 = 3 × 2/30 × 2 = 6/60
3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
   72/20 = 72 × 3/20 × 3 = 216/60
4. Subtract the two like fractions:
   6/60 - 216/60 = 6 - 216/60 = -210/60
5. After reducing the fraction, the answer is -7/2

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