اذا كان :
A equals open square brackets table row 1 2 row 3 4 end table close square brackets space comma space B equals open square brackets table row 5 6 row 7 8 end table close square brackets
فإن A-B يساوي
open square brackets table row cell negative 4 end cell cell negative 4 end cell row cell negative 4 end cell cell negative 4 end cell end table close square brackets
open square brackets table row 4 4 row 4 4 end table close square brackets
open square brackets table row cell negative 1 end cell cell negative 1 end cell row cell negative 1 end cell cell negative 1 end cell end table close square brackets
open square brackets table row 1 1 row 1 1 end table close square brackets