Question

—2{5+3[2-6(8-6)+3] -1}=​

Answer 1

2 x (5+3x(2-6 x2 +3)-1)
2 x (5+4x(2-12+3)-1)
2 x (5+3 x(-10+3)-1)
2 x (5+3 x -7-1)
2 x (5-21-1)
2 x (-16-1)
2 x -17
-34