Respuesta :

Given

[tex]4-2x=-2[/tex]

Part A

The first thing is to subtract 4 from both sides, it should not add...

The mistake the student made was he or she added 4 to both sides instead of subtracting 4 from both sides.

[tex]\begin{gathered} 4-4-2x=-2-4 \\ -2x=-6 \end{gathered}[/tex]

Part B

[tex]\begin{gathered} \text{Divide both sides by -2} \\ -\frac{2x}{-2}=-\frac{6}{-2} \\ \\ x=3 \end{gathered}[/tex]