Question

which expression is equivalent to $f + 6 + 3f$?
answer
$4f$ $4f + 6$
$10f$ $f + 9$

Explanation:

Step1: Identify like terms

In the expression \( f + 6 + 3f \), the like terms are \( f \) and \( 3f \).

Step2: Combine like terms

Combine \( f \) and \( 3f \): \( f + 3f = 4f \).

Step3: Rewrite the expression

After combining like terms, the expression becomes \( 4f + 6 \).

Answer:

\( 4f + 6 \) (corresponding to the option "4f + 6")