Answer
3 times the difference of t and 1 simplifies to:
$3t-3$
Work Step by Step
$\ \ \underbrace{3}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \underbrace{(t-1)}$
3 times $\ \ \ \ \ $ the difference of t and 1
$3(t-1)\longrightarrow$ apply the distributive property
=$3t-3$
