Question

Verify that (a+b)+c.=a+(b+c)by taking a = -12, b = -9/11, c = 7/-12

Answer 1

explanation:

by taking a=-12,b= -9/11,c=7/-12

LHS= (a+b)+c= (-12+-9/11) + (-7/12)= ( -132-9)/11 -7/12= -141/11- 7/12= (-1692-77)/ 132= -1769/132

RHS= a+ (b+c) = -12+ ( -9/11-7/12)= -12+( -108-77)/132= -12-185/132= ( -1584-185)/132= -1769/132

So LHS= RHS

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