Question 1033692
At the zoo the number of elephants is six more than the number of turtles. If there are 12 elephants and turtles combined, how many of each are there? 
-------------------
e = t + 6
e + t = 12
-----------------------
Substitute for "e" and solve for "t"::
t+6 + t = 12
-------
2t = 6
t = 3 (# of turtles)
--------
e = t+6 = 9 (# of elephants)
-----------------
Cheers,
Stan H.
-------------