-4x -1.375 - 8 < -2.5
-4x -1.375 - 8 < -2.5 simplify
-4x - 9.375 < -2.5 add 9.375 to both sides
-4x < 6.875
Divide both sides by -4......since we're dividing an inequality by a negative, we must reverse the inequality sign
x > 6.875 / -4
x > -1.71875