Question 630587
-5 <= 2x + 7 <= 3
-5 &#8804; 2x+7 &#8804;  3
add -7
-12 &#8804; 2x &#8804; -4
divide by  2
-6 &#8804; x &#8804; -2
number line:
<....[-6<===>-2]........>
solution:
[-6,-2]