# Re: Simple algebra for a dummy

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Posted by Subhotosh Khan on November 13, 2002 at 09:49:50:

In Reply to: Simple algebra for a dummy posted by Sam on November 13, 2002 at 09:00:05:

: In working with Algebra I am doing expression simplfication
: In doing the following I am getting a little confused

: 6a-3b-2a-6b=4a-9b
: =-5

: 6a(minus)2a I understand because I see the (-) minus sign
: Now how do I know
: 3b is supposed to plus(+) 6b???
: I dont see a plus sign anywhere
: That is ofcourse without figuring lt out from the outcome

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Need to dig back in your pre-algebra a little bit.

Remember:

-3 -6 = -9

If you cannot understand this - you need to review your pre-algebra.

Play with number line with negative numbers and try conceptualize what does addition and subtraction mean in relation to number line - in particular dealing with negetive numbers.

These are not easy concepts - you need to practice - a lot......

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