SOLUTION: I cant figure out this problem. Im not sure what key is for absolute value so [] mean absolute value. [2x-4]+7=15 please solve this soon. Thank you

Algebra ->  Absolute-value -> SOLUTION: I cant figure out this problem. Im not sure what key is for absolute value so [] mean absolute value. [2x-4]+7=15 please solve this soon. Thank you      Log On


   

Question 135466: I cant figure out this problem.
Im not sure what key is for absolute value so [] mean absolute value.
[2x-4]+7=15
please solve this soon.
Thank you
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
[2x-4]+7=15
|2x-4| = 8
Since the result is 8, that 2x-4 must be 8 or -8
EQUATIONS
2x-4 = 8 or 2x-4 = -8
2x = 12 or 2x = -4
x = 6 or x = -2
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Cheers,
Stan H.