\(\frac{3}{4} t\)
First lets substitute the value of the variable; (t=12)
\(\frac{3}{4} (12)\)
Now lets solve the equation;
\(\frac{3}{4} (12) = \frac{3}{4} * \frac{12}{1}\)
Next cross simplify;
\(\frac{3}{1} * \frac{3}{1} (multiply) 3 * 3 = 9\)
So 9 is the final answer! Hope this helps!