1.

Verify (a + b) + c = a + (b + c) for the values of a = ( - 9 ), b = ( - 7 )and c = 6. ​

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Answer:

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Step-by-step explanation:DEVIDE WHOLE equation to LHS and RHS thna+(b+c) is LHS and (a+b)+c is RHSthn first TAKE a+(b+c) and thn first solve bracket ... 



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