math
posted by sara .
how do u multiply a positive number and a negitave number

Multiply them normally, but the product will be negative.
http://www.mathsisfun.com/multiplyingnegatives.html 
Multiply them the same as you would normally. Forget the positive sign for now.
Example: 2 x 3 = 6 then add the negative sign and you get : 6.