SOLUTION: i cant seem to Find the values of x in the following equation when i have tried i keep coming up with x=6 or x=-4 but those are not the answers that i have on my submission so i do

Question 620302: i cant seem to Find the values of x in the following equation when i have tried i keep coming up with x=6 or x=-4 but those are not the answers that i have on my submission so i don't know what i could be doing wrong. could you explain what it is i might be doing that i keep getting the wrong answers??? this is the equation>>> |3x + 6| + 7 = 28
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
|3x + 6| + 7 = 28
|3x + 6| = 21
|x + 2| = 7
----------
Case 1:
x + 2 = 7
x = 5
--------
Case 2:
-x-2 = 7
x = -9

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