Answers

Subtract 64/30 from 1/20

1^st number: 1/20, 2^nd number: 2 4/30

1/20 - 64/30 is -25/12.

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,
   1/20 = 1 × 3/20 × 3 = 3/60
3. Likewise, for the 2nd fraction, since 30 × 2 = 60,
   64/30 = 64 × 2/30 × 2 = 128/60
4. Subtract the two like fractions:
   3/60 - 128/60 = 3 - 128/60 = -125/60
5. After reducing the fraction, the answer is -25/12

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