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3 years ago

5

How to solve |2x-4|=8

2 answers:

zaharov [31]3 years ago

6 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

valentina_108 [34]3 years ago

3 0

|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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