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## Homework Statement

Three point charges are located at the corners of an equilateral triangle with side length a=0.50m

## Homework Equations

## The Attempt at a Solution

My question is how can I subtract the vector F

_{2/1}? Vectors cant be negative right? I found the magnitude of the vector to be negative. Should I have not included the negative sign for the 4 micro coulomb charge? Then I add the two vectors and that will give me the correct result.

My result is correct, but I cant minus vectors so I kind of did it illegally ya?

Thanks for your help.