How do you solve #abs(5x+2)<=-2#?

1 Answer
Feb 16, 2017

Answer:

See the entire solution process below:

Explanation:

The absolute value function takes any negative or positive term and transforms it to its positive form. Therefore, we must solve the term within the absolute value function for both its negative and positive equivalent.

For inequalities we must write this as a system of inequalities to solve:

#2 <= 5x + 2 <= -2#

#2 - color(red)(2) <= 5x + 2 - color(red)(2) <= -2 - color(red)(2)#

#0 <= 5x + 0 <= -4#

#0 <= 5x <= -4#

#0/color(red)(5) <= (5x)/color(red)(5) <= -4/color(red)(5)#

#0 <= (color(red)(cancel(color(black)(5)))x)/cancel(color(red)(5)) <= -4/5#

#0 <= x <= -4/5#