Question

15. Ifa = -8, b = -7, c = 6, then verify that (a + b) + c = a + (b + c).​

Answer 1

Answer:

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

-15+6 = -8-1

-9 = -9

therefore LHS=RHS

Answer 2

Step-by-step explanation:

Given :- a= -8, b= -7, c= 6

To prove :- (a+b)+c = a+(b+c)

Solution :- a+b = -8 + (-7)

= -8 -7

= -15

therefore (a+b)+c = -15+6

= -9 ........(1)

now, (b+c) = -7 + 6

= -1

therefore a+(b+c) = -8 +(-1)

= -8-1

= -9 ..........(2)

from (1) and (2), we get,

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

hence proved.

Thank you..