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## Homework Statement

The diagram shows 3 vector all of equal length. Which statement is true?

a. A+B=A-C

b. A+B=B-C

c. A-B=2A-C

d. A-B=2A+C

e. 2A+2B=2C

## Homework Equations

None

## The Attempt at a Solution

I just added them in my head, and thought that e. 2A+2B=2C would also work. Why doesn't it?