True. Every integer is indeed a rational number. A rational number is defined as any number that can be expressed as the quotient of two integers, where the denominator is not zero. For example, an integer like 5 can be expressed as 5/1, where both 5 and 1 are integers and the denominator (1) is not zero. Similarly, negative integers like -3 can be expressed as -3/1. Therefore, all integers fit within the definition of rational numbers.
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