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Question
Fill in the blanks :
7 – 18 = ______ and (7 – 18) – 5 = ______
18 – 5 = ________ and (7 – 18) – 5 = __________
Is (7 – 18) – 5 = 7 – (18 – 5) ?
=> Subtraction of whose numbers is not ______
Solution
7 – 18 = -11 and (7 – 18) – 5 = -16
18 – 5 = 13 and (7 – 18) – 5 = -6
Is (7 – 18) – 5 = 7 – (18 – 5) = ?
No, (7- 18) – 5 ≠ 7 – (18 – 5)
=> Subtraction of whole number is not associative.
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