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**helpperson****Guest**

Can you tell me how you work this equation please

2x+3=1 3x+5=2

**Patrick****Real Member**- Registered: 2006-02-24
- Posts: 1,005

Try to read this: http://www.mathsisfun.com/algebra/introduction.html

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What music do I listen to? Clicky click

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**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,562

2x+3=1

double a number called x and add 3 and you get 1

double # add 3 and get 1

What is double # ????

3 less than 1

Yes, nice thinking.

So double # is 1 take away 3.

Yes, what is 1 take away 3 ??

Count backwards... 1 0 -1 -2

-2

So double # is -2

What times 2 is -2 ??

Hmmm...

Half of -2 ???

Yes, excellent thinking!!!

What is half of -2 ????

Well if you owe me 2 dollars, then I owe you negative two dollars.

Half of that is one dollar I guess!!

Maybe it is -1 ??

Yes you are right.

The number is -1, most people would agree who study algebra.

**igloo** **myrtilles** **fourmis**

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