Question

7(2x+1)+5(-3x-1)<1sobre2

Answer 1

7(2x + 1) + 5(-3x - 1) < 1/2
14x + 7 + (-15x - 5) < 1/2
14x + 7 -15x -5 < 1/2
14x - 15x + 7 - 5 < 1/2
-x + 2 < 1/2
2(-x + 2) < 1
-2x + 4 < 1
-2x < 1 - 4
-2x < - 3
-x < -3/2 (.-1)
x < 3/2