Question

What is this ?? I don't understand please help on these

Answer 1

$T_{\ \textless \ -5,-3\ \textgreater \ }$(ABC) means that the triangle is moving five units to the left and three units down
$T_{\ \textless \ -4,-2\ \textgreater \ }$(ABC) means that the triangle is moving four units to the left and two units down

The triangle is moving a total nine units down and five units left

$T_{\ \textless \ -9,-5\ \textgreater \ }$(ABC) is your final answer