Answers

Subtract 6/18 from 9/7

1^st number: 1 2/7, 2^nd number: 6/18

9/7 - 6/18 is 20/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 18 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 7 × 18 = 126,
   9/7 = 9 × 18/7 × 18 = 162/126
3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
   6/18 = 6 × 7/18 × 7 = 42/126
4. Subtract the two like fractions:
   162/126 - 42/126 = 162 - 42/126 = 120/126
5. After reducing the fraction, the answer is 20/21

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