How to Balance a See-Saw with Different Weights?

[needhelp83]

A 67-kg adult sits at one end of a 10-m board, on the other end of which sits his 23-kg child. Where should the pivot point be placed so the board (ignore its mass) is balanced?

67d=(10-d)23
67d=230-23d
90d=230
d=2.56 m

The fulcrum should be at 2.56 m

Have I set this up right

 

[radou]

Looks okay.

 

[Hootenanny]

Looks okay to me, although you should state where your distance d is to me measured from.

Edit: Too slow again