Technical information
Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: Orden Sie richtig zu! (a,b sind reelle Zahlen und nicht Null) {a + b =; a - b =; a x b =; a x (b x c) =; a + (b + c)} -> {(a + b) + c; b + a; (a x b) x c; -b + a; b x a}
Right answer summary: a + b = -> b + a; a - b = -> -b + a; a x b = -> b x a; a x (b x c) = -> (a x b) x c; a + (b + c) -> (a + b) + c
Question state: todo