1/2 * x + 2 = 10
1/2 is a fraction im not dividing

- anonymous

1/2 * x + 2 = 10
1/2 is a fraction im not dividing

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- hlambach

I assume you're trying to find x?

- anonymous

yes

- hlambach

Okay. So start with the 2, you need to get it to the other side.

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- anonymous

first subtract x to do inverse

- anonymous

not x imeant 2

- anonymous

now u have 1/2x=8
what do u have to do to make 1/2x to 1x

- anonymous

idk

- anonymous

well 2 1/2 make a whole right?

- hlambach

1/2x + 2 = 10
-2 -2
What do you get?

- anonymous

where did you get the other 2

- anonymous

so multiply by 2 to 8

- anonymous

to get x=?

- anonymous

i got 16 but it was wrong

- hlambach

The opposite of 1/2 is 2, which is why you need to multiply 8 by 2.

- anonymous

and where did you get the other 2??

- anonymous

the other 2 is to show inverse to both sides

- anonymous

but the 1/2 is not division its a fraction

- anonymous

we didnt divide

- anonymous

flip 1/2 to 2/1

- anonymous

2/1=2

- hlambach

You're trying to get 1/2 to the other side. So we're doing the opposite, just like we did with the +2 part in the equation. Instead of ADDING 2, we SUBTRACTED 2.
Now to get x by itself, you need to multiply 1/2 by it's opposite. We are multiplying because fractions are really just division problems. So we multiply each side by 2. Got it?

- anonymous

but this one isnt division

- hlambach

Like I said, fractions are just division problems. What you're doing to the 1 is DIVIDING it by 2.

- hlambach

1 divided by 2 = 1/2

- hlambach

Okay, let's try it a "different" way.
You are multiplying x by 1/2, right? So do the opposite, DIVIDE both sides by 1/2.

- anonymous

16

- anonymous

but i tried that and it was wrong

- hlambach

It's right.

- hlambach

Plug in 16 for x and you'll see it's right.
1/2(16) + 2 = 10

- hlambach

1/2 * 16 = 8
8 + 2 = 10

- anonymous

but its said it was -16 after i got it wrong

- hlambach

Unless the original equation is
-1/2x +2 = 10
You are right.

- anonymous

ok

- hlambach

If I helped, consider giving me a medal, please. :)

- hlambach

Thanks!

- anonymous

your welcome

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