Question

10. If a = -8, b= -7, c = 6, verify that (a + b) + c = a +(b+c).​

Answer 1

If a= -8, b= -7, c= 6
then,
LHS=(a+b)+c
RHS=a+(b+c)

LHS=(-8+(-7))+6
=(-8-7)+6
=(-15)+6
= -9

RHS=-8+(-7+6)
=-8+(-1)
=-8-1
= -9
-9=-9
Hence, LHS=RHS

Answer 2

Answer:

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

( - 8 + - 7 ) + 6 = - 8 ( - 7 + 6 )

( - 15 ) + 6 = - 8 ( - 1 )

- 9 = 8

LHS NOT EQUALS TO RHS.

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