Inequality with negative constants

[zeion]

Homework Statement

Solve each of the following inequalities; give your answers in interval notation.

i) ax + b < c, where a, b, c are negative constants

Homework Equations

The Attempt at a Solution

ax < c - b
x > c - b / a
because I'm dividing by a negative constant.

x > -b + c / a

 

[lanedance]

try rewriting the equation using
A = -a
B = -b
C = -c

then A,B,C are all positive & things shoud be a little clearer