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false
The whole numbers are not closed under division! The statement is false since, for example, 2/3 is not a whole number.
False. There can either be zero, one, or infinite solutions to a system of two linear equations.
False Apex
An open sentence is neither true nor false. It depends on the value of the variable. If you had 5=3 that would be a closed sentence which is false. If you had 5=5 that would be a closed sentence which is true. If you had x=3 then it is open to whether the x is a 5 or a 3.