Question 1062502
<pre>
(x,y)&#8594;(x+2,y+3),

That adds +2 to the first coordinate, and adds +3
to the second coordinate

 then (x,y)&#8594;(x-5,y+7),

That adds -5 to the first coordinate, and adds +7
to the second coordinate

 then (x,y)&#8594;(x+13,y).

That adds 13 to the first coordinate, and adds 0
to the second coordinate.

So altogether we have added +2-5+13 = 10 to the first coordinate, 
and added +3+7+0 = +10 to the second coordinate

So the single translation is (x,y)&#8594;(x+10,y+10)

Edwin</pre>