I really need some help, I have a headake and forgot how to solve for X please help me. :((

- anonymous

I really need some help, I have a headake and forgot how to solve for X please help me. :((

- katieb

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- anonymous

Do you have a specific problem you need to solve? I can go step by step and help you through it.

- anonymous

4x-31 on one side and 2x+19 on the other solve for x

- myininaya

So we have this:
4x-31 = 2x+19
Get your terms that have factor x on one side
All other terms, your constant terms, on the other side

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## More answers

- ParthKohli

Let's make up an equation and I'd solve it for you:\[\begin{aligned}6x + 3&=9x - 1\\6x&=9x - 1 - 3\\ 6x&=9x-4\\6x - 9x&=-4\\ -3x&=-4\\ x &={4 \over 3} \end{aligned}\]

- anonymous

25?

- myininaya

How about we have some interaction which includes the user asking here to solve for x?

- myininaya

So we have 4x-31=2x+19
Do you know how to put your x terms together and your constant terms together?
You need to do this by adding/subtracting terms from both sides.

- anonymous

Okay thanks, I'll post another prolbem, it's really complex and I haven't seen it before

- anonymous

|dw:1350653573213:dw|

- anonymous

If If m ∠ 3 = 104˚, what is m ∠ 8?

- ParthKohli

Hint: use corresponding angles identity, then find a linear pair.

- anonymous

< 2, 3, 6,7 are the same?

- ParthKohli

No... first use \(\angle 3 = \angle 7\).

- anonymous

Sorry forgot how to do this >.<

- ParthKohli

Then notice that you have a linear pair, so \(\angle 7\) and \(\angle 8\) are supplementary.

- anonymous

So they all equal 104?

- ParthKohli

Hmm, do you know what these are?
1) Corresponding angles
2) Alternate interior angles
3) Linear pair
4) Opposite angles

- anonymous

Yeah I'm a sinor, but I forgot it's been like a year since I was in math

- anonymous

|dw:1350654095713:dw|

- anonymous

Ohhhh

- anonymous

Um. So it's not 104

- anonymous

it's 94?

- anonymous

>.<

- anonymous

|dw:1350654253156:dw|

- anonymous

<2 is going to measure the same as <8

- anonymous

half of 180 is 90, but that's not an answer choise

- anonymous

Yes. <2 is the same as 8.
They give you angle 3, 104 degrees. What other angles are the same as angle 3?

- anonymous

*the same as <8

- anonymous

<2

- ParthKohli

<3

- anonymous

No, angle 2 and 3 are supplementary. Added up they equal 180 degrees. |dw:1350654491698:dw|

- anonymous

so they are all 104

- anonymous

No, angles 3, 1, 5, 7 are all corresponding. So if angle 3 is 104 degrees, then so are 1,5,7.
Do you understand?
Angles 2, 4, 6, 8 are also corresponding to each other.

- anonymous

Yeah I understand but how to I find out how much the other angles are

- anonymous

Supplementary angles form 180 degrees.
A straight equals 180 degrees. |dw:1350654810017:dw|

- anonymous

So 104 + ? = 180

- anonymous

I got my test wrong anyways. Sorry, thanks for the help

- anonymous

Sorry to hear that. ):

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