An equation and the steps to solve it are shown below: 3x - one over two (8x - 2) = 4 Step 1: 3x - 4x + 1 = 4 Step 2: x + 1 = 4 Step 3: x + 1 - 1 = 4 - 1 Step 4: x = 3 Which step was the error made and why?

Question

An equation and the steps to solve it are shown below:  3x - one over two (8x - 2) = 4  Step 1: 3x - 4x + 1 = 4 Step 2: x + 1 = 4 Step 3: x + 1 - 1 = 4 - 1 Step 4: x = 3  Which step was the error made and why?

debbieg · Answer

Is this your step 1?$$\frac{ 3x-1 }{2(8x-2) }=4$$I'm having trouble deciphering... an image or some more parantheses would help.

cwrw238 · Answer

yes - its pretty vague as it stands

anonymous · Answer

3x - one over two (8x - 2) = 4

Step 1: 3x - 4x + 1 = 4
Step 2: x + 1 = 4
Step 3: x + 1 - 1 = 4 - 1
Step 4: x = 3

anonymous · Answer

it's wanting to know the error

debbieg · Answer

There's no need to spell out the numbers, lol.

OK, you're saying "3x - one over two (8x - 2) = 4" but that isn't at all what you have written as: Step 1: 3x - 4x + 1 = 4

so just going with the enumerated steps you show:

Step 1: 3x - 4x + 1 = 4 
Step 2: x + 1 = 4                 3x-4x is not =x... 3x-4x=-x
Step 3: x + 1 - 1 = 4 - 1 
Step 4: x = 3

anonymous · Answer

I copied and paste it it did that by it's self.

anonymous · Answer

so it would be step 1?

debbieg · Answer

Well, the error is the result given in step 2 of the operation stated in step 1. Whichever step you want to call it, that's the error.

anonymous · Answer

thank you

debbieg · Answer

Wait.... i think I see what you mean,t he starting equation is:

$$3x-\frac{ 1 }{ 2 }(8x-2)=4$$

Then you get to step 1. It doesn't change my explanation, I just understand where the equation started now, lol.

debbieg · Answer

you're welcome.