Answers

Subtract 7/30 from 4/20

4/20 - 7/30 is -1/30.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 30 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 20 × 3 = 60,
   4/20 = 4 × 3/20 × 3 = 12/60
3. Likewise, for the 2nd fraction, since 30 × 2 = 60,
   7/30 = 7 × 2/30 × 2 = 14/60
4. Subtract the two like fractions:
   12/60 - 14/60 = 12 - 14/60 = -2/60
5. After reducing the fraction, the answer is -1/30

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