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Mathematics 8 Online
OpenStudy (anonymous):

Simplify the sum. (-7x-5x^4+5)-(-7x^4-5-9x)

OpenStudy (anonymous):

Simplify the sum I'm guessing is when you simplify whatever you come out with. Am I right?

OpenStudy (anonymous):

Yes

OpenStudy (anonymous):

Like get the answer from one side, get the answer of the other side, then take the two and subtract them

OpenStudy (anonymous):

Okay. So what do you need help doing, simplifying the sum, or coming up with the answer?

OpenStudy (anonymous):

Coming up with the answer for both sides I mean.

OpenStudy (anonymous):

Coming up with the answer for both sides. Or really just the whole thing

OpenStudy (anonymous):

Okay.

OpenStudy (anonymous):

Lets start with the right side. What numbers have the same variable next to them?

OpenStudy (anonymous):

7x, and 5x^4

OpenStudy (anonymous):

Oh no I'm sorry. 7x^4 and 9x

OpenStudy (anonymous):

We are only sticking on the left side of the equation for now. Other than that, you are right. So now you must solve the exponent.

OpenStudy (anonymous):

How do I do that?... Im sorry. Im doing a packet for my honors algebra class that I've been needing to get done over the summer. Im just really lost on my knowledge for all of this because Ive forgotten a lot over the summer.

OpenStudy (anonymous):

You must multiply 5*5*5*5

OpenStudy (anonymous):

625

OpenStudy (anonymous):

Right. Now you must subtract -7 and 625. Since 7 is negative you are really just adding 7 to 625

OpenStudy (anonymous):

Once you add the 7 to 625 you must add 5. That will be the answer for the left side of the equation. Don't forget to put the x next to it. Now we can move onto the right side of the equation.

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