How do you solve #12+ 2|3x - 4|= 8#?

1 Answer
Sep 5, 2017

See a solution process below:

Explanation:

First, subtract #color(red)(12)# from each side of the equation to isolate the absolute value term while keeping the equation balanced:

#-color(red)(12) + 12 + 2abs(3x - 4) = -color(red)(12) + 8#

#0 + 2abs(3x - 4) = -4#

#2abs(3x - 4) = -4#

Next. divide each side of the equation by #color(red)(2)# to isolate the absolute value function while keeping the equation balanced:

#(2abs(3x - 4))/color(red)(2) = -4/color(red)(2)#

#(color(red)(cancel(color(black)(2)))abs(3x - 4))/cancel(color(red)(2)) = -2#

#abs(3x - 4) = -2#

The absolute value function takes any term and transforms it to its non-negative form.

Therefore, there is no value of #x# which will allow the absolute value function to equal a negative number. There are no solutions for this problem. Or, the solution is the null or empty set: #{O/}#