Question

Verify that (a+b) +c=a+(b+c) by taking. (a). a=-2/3 and b=-3/7



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Answer 1

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Answer 2

Step-by-step explanation:

{(-2/3)+(-3/7)}+c = (-2/3)+{(-3/7)+c}

{(-14-9)/21}+c = (-2/3)+{(-3+7c)/7)

(-23/21)+c = (-14-9+21c)/21

(-23+21c)/21 = (-23+21c)/21

therefore LHS = RHS