Question

. 6 – 4 [2 – 5 (4 – 3) + 3 (3 – 2)]

Answer 1

$6 - 4(2 - 5(4 - 3) + 3(3 - 2)) \\ 6 - 4(2 - 5 \times 1 + 1) \\ 6 - 4(2 - 5 + 3) \\ 6 - 4 \times 0 \\ 6 - 0 = 6$