Question

(10-3×6)-2[5+3×(4-7)​

Answer 1

$\left(10-3\times \:6\right)-2\left[5+3\times \left(4-7\right)\right]$

$=-8-2\left[5+3\times \left(4-7\right)\right]\\=-8-2\left(-4\right)\\=-8-\left(-8\right)\\=0$