Answers

Subtract 21/18 from 7/18

1^st number: 7/18, 2^nd number: 1 3/18

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

Steps for subtracting fractions

1. Subtract the two fractions:
   7/18 - 21/18 = 7 - 21/18 = -14/18
2. After reducing the fraction, the answer is -7/9

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