x = [tex]\frac{1}{3}[/tex]
distribute parenthesis on left side of equation
20x - 6 - 0.25 + 0.25x = 0.5 ( collect like terms on left side )
20.25x - 6.25 = 0.5 ( add 6.25 to both sides )
20.25x = 6.75 ( multiply both sides by 4 )
81x = 27 ( divide both sides by 81 )
x = [tex]\frac{27}{81}[/tex] = [tex]\frac{1}{3}[/tex]
