Answers

Subtract 21/18 from 8/18

1^st number: 8/18, 2^nd number: 1 3/18

8/18 - 21/18 is -13/18.

Steps for subtracting fractions

1. Subtract the two fractions:
   8/18 - 21/18 = 8 - 21/18 = -13/18

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