## Intermediate Algebra (6th Edition)

$3x+12$
We are given the statement $3(x+4)=3x+4$, which is an incorrect application of the distributive property. The distributive property holds that $a(b+c)=ab+ac$. In this example, $a=3$, $b=x$, and $c=4$, so the statement should be $3(x+4)=3\times x+3\times4=3x+12$