Question

[Bình]

a={5;4;[a-2];9;0;7}. B={ [b+3] ;5;4;6;9;7}. Tìm hai số a,b để tap hợp a ,b bang nhau

Answer 1

[Nguyễn Hoàng Minh]

\(A=B\Rightarrow\left\{{}\begin{matrix}a-2=6\\b+3=0\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}a=8\\b=-3\end{matrix}\right.\)