-4x3=-12 ; 3x(-4)=12
14 x 1= 14
( 5 x 17 ) x 23 = ( 23 x 5 ) x 17
14 x (2 x 7) = 2 x (14 x 7 )
-8x0=0
-5 x 1= -5
5x7=35; 5x7=35
6x0=0
-5 x ( -7 + 8 ) = (-5 x (-7 ) ) + (-5 x 8 )
2 x (4 - 3 ) = ( 2 x 4) - (4 x 3)
