SOLUTION: 15-|3x-12|=<3

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Question 510407: 15-|3x-12|=<3
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
15-|3x-12|=<3
solve for 2 conditions
For(3x-12)>0
15-3x+12≤3
-3x≤3-27
-3x≤-24
multiply by -1 and reverse inequality sign
3x≥24
x≥8
..
For(3x-12)<0
15+3x-12≤3
3x≤3-3=0
3x≤0
x≤0
..
solution:
(-∞, 0] U [8, ∞)