<PRE><B>Question 765087</B>
Natural numbers are the counting numbers:  1, 2, 3....&lt;P&gt;
2x-1 &lt;= 4 &lt;P&gt;
2x &lt;= 5&lt;P&gt;
x&lt;=5/2 so x is 2 or 1.&lt;P&gt;
2x+2y &lt;= 7(use x=1)&lt;P&gt;
2 + 2y &lt;= 7&lt;P&gt;
2y &lt;= 5&lt;P&gt;
y &lt;= 5/2 so y = 2 or 1.&lt;P&gt;
2x+2y &lt;= 7 (use x=2)&lt;P&gt;
4 + 2y &lt;= 7&lt;P&gt;
2y &lt;= 3&lt;P&gt;
y &lt;= 3/2 so y = 1&lt;P&gt;
Sometimes 0 is considered a natural number.  In that case, any of the above could include 0 for y.  And if x = 0:&lt;P&gt;
2y &lt;= 7&lt;P&gt;
y &lt;= 7/2 so y could be 3, 2, 1 or 0
</PRE>