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Ex 1.1, 8 - Chapter 1 Class 7 Integers

Last updated at Sept. 9, 2021 by

Ex 1.1, 8 - Verify a - (- b) = a + b for (i) a = 21, b = 18 (ii) a = 1

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Ex 1.1, 8 Verify a – (– b) = a + b for the following values of a and b. (i) a = 21, b = 18 Rough + & − becomes − + & + becomes + − & − becomes + a = 21, b = 18 a − (−b) = 21 − (−18) = 21 + 18 = 39 a + b = 21 + 18 = 39 ∴ a − (−b) = a + b

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