Question

If a = -8, b = -7 and c = 6. Verify that (a+b)+c = a+(b+c).
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Answer 1

Step-by-step explanation:

given

a = -8, b = -7 and c = 6

(a+b)+c =

lhs = (a+b)+c

= [8+(-7)]+6

= (8-7)+6

= 1 +6

= 7 = lhs

rhs = a+(b+c).

= 8 + (-7 + 6)

= 8+ (-1)

= 8 - 1

= 7 = rhs

lhs  = rhs

(a+b)+c = a+(b+c).

hence prove

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