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Is the number −4+−5-4 + -5 rational or irrational?\newlineChoices:\newline(A) rational\newline(B) irrational

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Full solution

Q. Is the number −4+−5-4 + -5 rational or irrational?\newlineChoices:\newline(A) rational\newline(B) irrational
  1. Evaluate −4+(−5)-4 + (-5): Evaluate −4+(−5)-4 + (-5).\newline−4+(−5)-4 + (-5)\newline=−4−5= -4 - 5\newline=−9= -9
  2. Identify number type: Identify whether −9-9 is a rational or irrational number.−9-9 is an integer, and all integers are rational numbers because they can be expressed as a fraction (in this case, −91-\frac{9}{1}).

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