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[tex]\begin{bmatrix}{4}&{3}\\{-1}&{7}\end{bmatrix}+5[/tex]

is it correct if i do it this way ,

[tex]\begin{bmatrix}{4}&{3}\\{-1}&{7}\end{bmatrix}+5\begin{bmatrix}{1}&{0}\\{0}&{1}\end{bmatrix}[/tex]

[tex]=\begin{bmatrix}{9}&{3}\\{-1}&{12}\end{bmatrix}[/tex]

is 5 a scalar = 5I where I is an identity matrix ?