Question

-[4-(5-10+6)+[-3+(3+1-2]

Answer 1

$-[4-(5-10+6)+[-3+(3+1-2]$

$-[4 - (-5+6) + [-3+(4-2)]$

$-[4 - 1 + [-3+2]$

$-[4-1+ [-1]$

$-[4-1-1]$

$-[3-1]$

$-2$