If the equation is written correctly, [tex]\frac{-3}{3}[/tex] would become -1.
So the equation turns into: 4x-1=7.
Add 1 to both sides of the equation.
4x-1+1=7+1
4x=8
Divide both sides by 4 for x.
[tex]\frac{4x}{4}[/tex]=[tex]\frac{8}{4}[/tex]
x=2