x and y are integers. a+ b< 11 , and a> 6. What is the smallest possible value of a- b?
Select
A) 1	B) 2	C) 4	D) -2	E) -4
Focus on the transition points and plug in the values.   a&gt; 6 so a could be 7, 8, 9, 10, 11 etc   Look at a= 7   7 + b&lt; 11   b&lt; 4   b could be 3, 2, 1, 0, -1 etc   When b is 3, we get a- b= 4   This must be the smallest value because as a increases, b reduces so a- b increases.   Take another example. a= 11 so b&lt; 0.   a- b will give a value greater than 11.   Answer (4).
<result>C</result>
x and y are integers. a+ b< 11 , and a> 6. What is the smallest possible value of a- b?