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Rambler
Mathematics
6 September, 16:43
How to solve |2x-4|=8
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Lesly Rivera
6 September, 16:56
0
Ok ... let's break it apart and put it back together.
There's an absolute value ... "2x-4" is inside the absolute value. The absolute value of "2x-4" is equal to the value of 8 ... so find x.
There are TWO cases:
(2x-4) = 8
OR
- (2x-4) = 8
Now you should be able to solve it. If you can't ... well, just ask me below. I can't do ALL the work, can I?
:P
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Lillianna Howell
6 September, 17:12
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|2x - 4| = 8 ⇔ 2x - 4 = - 8 or 2x - 4 = 8 |add 4 to both sides
2x = - 4 or 2x = 12 |divide both sides by 2
x = - 2 or x = 6
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