Question

if a=21,b=-11 and c=-5, verify then (a+b)+c=a+(b+c)​

Answer 1

Answer:

{21+(-11)}+(-5)=21+{(-11)+(-5)}

10-5=21-16

5=5

hope this helps

Answer 2

Answer:

(21-11)+(-5) =21+(-11-5)

10-5=21-16

5=5

hence,lhs=rhs