Question: Evaluate the expression when a = 7, b = 2, c = -6 and d = -3. a-b c-d a-b c-d when a =

Evaluate the expression when a = 7, b = 2, c = -6 and d = -3. a-b c-d a-b c-d when a = 7, b = 2, c=-6, and d = -3. (Simplify your answer. Type an integer or a fraction.)

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