(-)(-) = +
(+)(-) = -
-6 x - 3 = +18
-3 x -2/3 = -1(-2) = +2
-6 x -2.5 = +15
5/8 x -2/3 = -10/24 = -5/12 = -0.41
0.5 x -2/3 = -1/3 = -0.3
