Question

-4[5(-3+12-6)+2(5-2)]

Answer 1

-4(15+2(3))
-4(15+6)
-4(21)

Answer 2

-4 [5 (-3 + 12 - 6) + 2 (5-2)
= -4 [ 5 (-3 + 6) + 2 x 3 }
= -4 [ 5 x 3 + 2 x 3 }
= -4 [15 + 6]
= -4 x 21
= -84