Question

if a=-8,b=-7,c=6 veryfy that (a+b)+c=a+(b+c)​

Answer 1

$(a + b) + c = a + (b + c) \\ \\ = > (- 8 + - 7) + 6 = - 8 + ( - 7 + 6) \\ \\ = - 15 + 6 = - 8 - 1 \\ \\ = > - 9 = - 9$

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Answer 2

please see the attached photo for your answer.......