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Answers
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Answer
(i) 7 - 9 = -2
Observation :- It is a negative Integer
Explanation :- Integers are the counting numbers along with their negative and 0 , so the , -2 is a Integer also as it's negative , hence it is a Negative Integer
(ii) 17 -(-21)
= 17 + 21 [because (-) × (-) = + ]
= 38
Observation :- As from above we know that 38 is Integer also It is positive hence it is a Positive Integer
(iii) -8 - (-14) = 6
Observation :- A positive Integer
Explanation :-
>> -8 - (-14)
= -8 + 14 [as (-) × (-) = +]
= 14 - 8
= 6
Hence as it's a Integer and also positive
So it's a Positive Integer
(iv) (-21) - (-10)
= -21 + 10 [as (-) × (-) = + ]
= 10 - 21
= -11
So a Negative Integer
(v) 32 - (-17)
= 32 + 17 [ As (-) × (-) = + ]
= 49
Hence a Positive Integer
(vi) -18 - (-18)
= -18 + 18 [As (-)×(-) = + ]
= 18 - 18
= 0
As zero is neither Positive nor Negative
Hence it is a Integer only
(vii) (-29) - 0
= -29 [As x + 0 = 0 and x - 0 = 0 , where x is any Real Number]
Hence a Negative Integer