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What x stands for if `4x=2x+6` ?  

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shortrenesmee | Student | eNotes Newbie

Posted October 3, 2012 at 12:21 AM via web

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What x stands for if `4x=2x+6` ?

 

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Mary Joy Ripalda | High School Teacher | (Level 3) Educator

Posted October 3, 2012 at 12:37 AM (Answer #1)

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`4x=2x+6`

To solve for x, bring together all the terms with x on one side of the equation. So move 2x to the left side.

  `4x` `=`  `2x` `+` `6`

`-2x`    `-2x`

`-----------`

 `2x` `=`    `0`   `+` `6`

  `2x = 6`

Then, isolate x.

  `(2x)/2=6/2`

   `x=3`

Hence, the value of x in `4x=2x+6` is 3.

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cdc6299 | Student, Grade 11 | eNotes Newbie

Posted October 3, 2012 at 12:30 AM (Answer #2)

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X is the variable. 

you will subtract 2x from both sides getting 4x-2x=6

then you subtract 2x from 4x and get 2x=6

then you divde each side by to and you get x=3

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cdc6299 | Student, Grade 11 | eNotes Newbie

Posted October 3, 2012 at 12:32 AM (Answer #3)

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then you plug it 3 in for x and you get 4*3=(2*3)+6

which equals 12=12

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