Question

{[ 9 - 6 .(10- 3+1 -1)] .(- 2) - 4} : [(4 - 5 . 2) :( - 2 - 1)]

Answer 1

{[9-6.(7)].(-2)-4}:[(4-10):(-3)]
{[9-42].(-2)-4}:[(-6):(-3)]
{[-33].(-2)-4}:2
{66-4}.2
62.2
=124