Explanation:
To find x first we have to put all terms that contain x together:
[tex]0.5x-2=0.2x+7[/tex]Substract 0.2x from both sides:
[tex]\begin{gathered} 0.5x-0.2x-2=0.2x-0.2x+7 \\ 0.3x-2=7 \end{gathered}[/tex]Add 2 on both sides:
[tex]\begin{gathered} 0.3x-2+2=7+2 \\ 0.3x=9 \end{gathered}[/tex]Divide both sides by 0.3:
[tex]\begin{gathered} \frac{0.3x}{0.3}=\frac{9}{0.3} \\ x=30 \end{gathered}[/tex]Answer:
x = 30
