Question

If(81)^x=3√3=1/(343)^y, then find 8x+5y=​

Answer 1

Answer:

Correct option is

C

8

17

,

8

15

3

x+y

=81

⇒3

x+y

=3

4

or x+y=4 ...(i)

Also (81)

x−y

=3

⇒3

4(x−y)

=3

1

,

4x−4y=1 ...(ii)

Solving equations (i) and (ii), we get

x=

8

17

and y=

8

15