اذا كانت A equals open parentheses table row 1 row 2 row 3 end table close parentheses space space space space space space comma space space space space space space B equals space open parentheses table row cell negative 1 end cell row 0 row 1 end table close parentheses فان A plus B equals
right to left ϕ
open parentheses table row 0 row 2 row 4 end table close parentheses
open parentheses table row 2 row 2 row 4 end table close parentheses
right to left open parentheses table row 4 cell space space space space 2 end cell cell space space space space 1 end cell end table close parentheses
