Question

8. If a = -7, b = -8 and c = 5, verify that
(a + b) + c = a + (b + c).
2. The sum of two integers is -18. If one of
them is 43, find the other.​

Answer 1

Answer:

a= -7 , b= -8 , c= 5

L.H.S.

(a+b)+c

substitute the value

(-7+(-8))+5

(-7-8)+5

-15+5

-10

R.H.S.

a+(b+c)

substitute the value

-7+(-8+5)

-7+(-3)

-7-3

-10

HENCE ,

L.H.S=R.H.S

Answer 2

Step-by-step explanation:

(-7 +(-8) + 5 = -7 +(-8 +5 )

-7 - 8 +5 = -7 (-8 +5)

-15 +5 = -7 -3

-10 = -10

sorry I don't 2nd solution please don't mind

2.