Question 1094524
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See the lesson

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/word/misc/Problem-on-animals-at-a-farm.lesson>Problem on animals at a farm</A>

in this site with similar problem solved and explained.


To get the unique solution, the number of the legs and the number of the heads should be given.


Otherwise the solution is not unique.


With your input data the solution is not unique.