Question

verify that ( a+b) + c = a + ( b+c ) for a = -7/3 ; b= -4/5 and c= -2/5

Answer 1

Answer:

L.H.S

(a + b) + c = (-7/3 +-4/5) + -2/5

= -45 + -12

--------------- + -2/5

15

= -57/15 - 2/5

= -57 - 6

------------- = -51/15

15

= - 17/ 3 ............( 1 )

Now, a + (b + c ) = -7/3 + ( -4/5 + - 2/5 )

= - 7/3 + -4 - 2

-------

5

= -7/3 - 6/5

= -45 -18

------------- = -63/15

15

= -12/3

= -4........( 2 )

Hence.. this is not equal