Question

If a = -8, b= -7, c = b, verify that ( a+b) + c=a+(b+c)

=

Answer 1

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


=> ( a + b ) + b = a + ( b + b )


LHS => [ -8 + ( -7 ) ] + ( - 7 )


RHS => -8 + [ -7 + ( - 7 ) ]


LHS => ( -8 -7 ) - 7


RHS => -8 + ( - 7 - 7 )

LHS => -22


RHS => -22



Hence, proved,

LHS = RHS

$.$

Answer 2

hiii, here is it answer .....
a=-8
b=-7
c=b (_7)



(a+b)+c = a+(b+c)
(_8-7)+-7. = -8 +(-7-7)
_15 -7 = -8-14
-22 = -22


hence it is proved....
hope help u