[tex]\huge\boxed{\sf{Hello\:there!}}[/tex]
To simplify this expression, we have to use the Distributive Property.
It states that
a(b+c)=ab+ac
Let's use it:
3(-2x+4)
-6x+12
That's my answer.
[tex]\huge\boxed{\boxed{Hope\:it\:helps\:you!}}}[/tex]
[tex]\huge\bold{\underline{\underline{\underline{Good\:luck!}}}}[/tex]
[tex]\huge\mathfrak{LoveLastsAllEternity}[/tex]