⇨ The numeric value of this expression = 12.
[tex]{\large \displaystyle \sf {1 \cdot x+9 }}[/tex]
[tex]{\large \displaystyle \sf {x=3 }}[/tex]
[tex]{\large \displaystyle \sf {1 \cdot 3+9 }}[/tex]
[tex]{\large \displaystyle \sf { 3+9 }}[/tex]
[tex]{\orange{\boxed{\boxed{\pink {\large \displaystyle \sf { \ 12 \ }}}}}}\\\\[/tex]
[tex]{\orange{\boxed{\boxed{\pink {\large \displaystyle \sf { \ 12 \ }}}}}}\\\\[/tex]