A equals open parentheses table row cell 1 space space space end cell 3 end table close parentheses space space space space space space comma space space space space space space space B equals open parentheses table row cell 2 space space space end cell 5 end table close parentheses فان A plus B equals
right to left ϕ
open parentheses table row cell 8 space space space end cell 3 end table close parentheses
open parentheses table row cell 3 space space space end cell 8 end table close parentheses
open parentheses table row 3 row 8 end table close parentheses