Question 513454
-15≤4x-8≤-7
{x|__≤x≤__}
-15 + 8 < 4x – 8 + 8 < -7 +8
-7 < 4x < 1
-7/4 <  x < ¼
{x|-7/4&#8804;x&#8804;1/4}