Să se calculeze [tex]A+B[/tex] pentru: 1) [tex]A=\left([tex]\begin{array}{lll}-2 & 3 & 5\end{array}\right), B=\left(\begin{array}{lll}4 & -2 & 1\end{array}\right)[/tex];

2) [tex]A=\left(\begin{array}{rr}1 & 1 \\ -1 & 1\end{array}\right), B=\left(\begin{array}{ll}0 & 1 \\ 1 & 0\end{array}\right)[/tex]; 3) [tex]A=\left(\begin{array}{rrr}1 & -1 & 0 \\ 0 & 2 & 3\end{array}\right), B=\left(\begin{array}{ll}1 & 0 \\ 0 & 1\end{array}\right)[/tex].[/tex]