Question

verify that (a+b)+c=a+(b+c) where a=-1/2,b=3/4,c=5/7​

Answer 1

Answer:L.H.S=(a+b)+c

=(-1/2+3/4)+5/7

=3/4+5/7-1/2

=27/28

R.H.S=a+(b+c)

=-1/2+(3/4+5/7)

=3/4+5/7-1/2

=27/28

So,L.H.S=R.H.S

Answer 2

Answer:

28/27

I hope it is correct answer mark as brainlist answer