We have the following equation:
[tex]0.8+0.3x=5[/tex]By subtracting 0.8 to both sides, we have
[tex]0.3x=4.2[/tex]and by dividing both sides by 0.3, we get
[tex]\begin{gathered} x=\frac{4.2}{0.3} \\ x=14 \end{gathered}[/tex]Therefore, the answer is: x= 14
