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In problems 6-8, write the contrapositive of each statement. If the statement is false, give a coun- terexample. 6. (a) If x > 3 then

In problems 6-8, write the contrapositive of each statement. If the statement is false, give a coun- terexample. 6. (a) If x > 3 then x- > 9 (b) Every solution of r- - 6x + 8 = 0 is even

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