2 x (8 -5) + 6 x (2-1) =
2 x 8 - 5 +6 x 2 =
2 x (8 -5) x (6 +2) =
2 + 8 x (5-2) - 6 x 3=
2 x (8 - 5) + 6 x 2 =
2 x 3 + 6
2 x 8 - 2 x 5 + 6 x 2
2 + 24 -18
2 x 8 - 2 x 5 x 8
16 -5 + 12
