LaTeX formatting for vector notation with subtraction

[Dustinsfl]

$t\vec{a}$ and $\vec{b}$ where t is a scalar times the vector a.

How can I make $\vec{b-ta}$ look right?

Solved
$$
\overrightarrow{b-ta}
$$

 

[jedishrfu]

The trick was to use the overrightarrow

as in

\overrightarrow{b-ta}

 

[pasmith]

I vould have said that $\vec{b} - t \vec{a}$ was correct.

 

[jedishrfu]

Yes, but I think they wanted the long arrow.

Long arrows shot from longbows travel farther and are more accurate when hitting a target. (jk)