The given equation is,
[tex]0.5\mleft(r+2.75\mright)=3[/tex]To solve the above equation for r, first divide both sides of the equation by 0.5.
[tex]\begin{gathered} \frac{0.5\mleft(r+2.75\mright)}{0.5}=\frac{3}{0.5} \\ r+2.75=6 \end{gathered}[/tex]Subtract 2.75 from both sides of the above equation.
[tex]\begin{gathered} r+2.75-2.75=6-2.75 \\ r=3.25 \end{gathered}[/tex]Therefore, the value of r is 3.25.
