- anonymous

I dont understand how to remove the parentheses and simplify for the following problem
9x-(7-3x) Can someone help me ?

- chestercat

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- anonymous

You distribute :
9x-7+3x
And then simplify..

- anonymous

Do you know how to distribute ?

- anonymous

Okay so it would be 63x+27x is that all

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## More answers

- anonymous

No. How did you get that ?

- anonymous

I distributed and multiplied can you help me solve it

- anonymous

Okay :)

- anonymous

Oh wait. You distributed the 9 as well ?

- anonymous

yes the 9 to the 7 and the 9 to the 3

- anonymous

I did that and thats what i came up with

- anonymous

That's wrong. Because you only have a negative before the brackets but if it was like this :
-9x(7-3x)
The yeah you MUST distribute the 9.
But your question is like this :
9x-(7-3x)
So you will only distribute the negative.
=> 9x-7+3x
( and don't forget: negative * negative = positive )
And when you simplify it all you have to do is COMBINE LIKE TERMS!!
=> 12x-7

- anonymous

Get it ?

- anonymous

So i just remove them by combine the subtraction sign in the problem

- anonymous

I have another question

- anonymous

Okay, what is it ?

- anonymous

Its just like the last one but im still a lil confused -6(3r+8)+9(7r+3)

- anonymous

What's confusing you ?

- anonymous

I keep wanting to multiply would it be 18r-48+63r-27 combine like terms then simplify

- anonymous

Yessss! That's absolutely correct :D

- anonymous

Can you simplify it ?

- anonymous

is it 45r-27 ???

- anonymous

No, combine like terms :
(18r+63r) + (-48-27 )
Now do it from here :)

- anonymous

is it 45r-27

- anonymous

no

- anonymous

(18r+63r) + (-48-27 )

- anonymous

and solve it :)

- anonymous

I dont understand still

- anonymous

You have to combine like terms right ?
18r and 63r are like terms
^ Add them
=> 81r
And -48 and -27 are like terms
^ Add them
=> -75
So, what will you get ?
81r-75
Do you get it ? :D

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