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Last updated at Sept. 9, 2021 by Teachoo
Ex 1.2, 4 Fill in the blanks to make the following statements true: (iv) [13 + (– 12)] + (............) = 13 + [(–12) + (–7)] Using associativity (a + b) + c = a + (b + c) [13 + (−12)] + (−7) = 13 + [(−12) + (−7)]