Question

if a = -6, b = -7, c =8 verify that (a+b) +c = a+(b+c)​

Answer 1

Given,

a = -6

b = -7

c = 8

now

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

putting the values

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

-13 +8 = -6 +1

-5 = -5

LHS = RHS

Hence, verified.

Answer 2

Answer:

this is associative law of addition.

Step-by-step explanation:

$a = - 6 \\ b = - 7 \\ \: c = 8$

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

$- 13 + 8 = - 6 + 1$

$- 5 = - 5$