Answers

Subtract 9/7 from 6/20

1^st number: 6/20, 2^nd number: 1 2/7

6/20 - 9/7 is -69/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 7 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 20 × 7 = 140,
   6/20 = 6 × 7/20 × 7 = 42/140
3. Likewise, for the 2nd fraction, since 7 × 20 = 140,
   9/7 = 9 × 20/7 × 20 = 180/140
4. Subtract the two like fractions:
   42/140 - 180/140 = 42 - 180/140 = -138/140
5. After reducing the fraction, the answer is -69/70

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