Refine:
[tex] \frac{2x-4}{10} [/tex]
factor out common term 2 :
[tex] \frac{2(x-2)}{10} [/tex]
Cancel the common factor 2 :
[tex] \frac{x-2}{5} [/tex]
Refine:
[tex] \frac{2x}{20} [/tex]
[tex] \frac{x-2}{5} = \frac{x}{10} [/tex]
find least common multiplier of 5 and 10
Multiply by LCM = 10
[tex] \frac{x-2}{5} *10 = \frac{x}{10} *10[/tex]
[tex]2(x-2)=x[/tex]
[tex]2x - 4 = x[/tex]
Add 4 to both sides:
[tex]2x-4+4 = x+4[/tex]
[tex]2x = x + 4[/tex]
[tex]2x - x = 4[/tex]
[tex]x = 4[/tex]
hope this helps!