(b) SubtractionYou already know that subtraction is not associative fo – InterviewSolution

1.	(b) SubtractionYou already know that subtraction is not associative for integers, then whatabout rational numbers.1BOTCheck for yourself.Subtraction is not associative for rational numbers.
Answer» LHS= -2/3 - [-4/5 - 1/2] = -2/3 - [-13/10] = -2/3 + 13/10 = 19/30RHS =[-2/3 - (-4/5)] -1/2 =[-2/3 + 4/5] - 1/2 = 2/15 - 1/2 = -11/30LHS is not equal to RHSTherefore substraction is not associative for the rational number

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