# What is 3\cdot [ - 2 1 \div [ 3 - ( 4 - 8 ) ] \}?

Oct 15, 2016

$4 - 8 = - 4$
$3 - \left(- 4\right) = 3 + 4 = 7$
$21 \div 7 = 3$
$3 \cdot \left(- 3\right) = - 9$