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Determine whether these biconditionals are true or false.
a.2 + 2 = 4 if and only if 1 + 1 = 2.
b.1 + 1 = 2 if and only if 2 + 3 = 4.

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kmay5351
A. is true because 2+2 does = 4 and  1 +1 =2
 B is false because 2 +3=5

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