[tex] \frac{x}{10}- \frac{1}{2} ( \frac{x}{2}- \frac{2x+1}{10}) = \frac{1-x}{4} [/tex]
[tex] \frac{x}{10}- \frac{1}{2}( \frac{5x-2x-1}{10} )= \frac{1-x}{4} [/tex]
[tex] \frac{x}{10}- \frac{1}{2}* \frac{3x-1}{10}= \frac{1-x}{4} [/tex]
[tex] \frac{2x-3x+1}{20}= \frac{1-x}{4 } [/tex]
[tex] \frac{1-x}{20}= \frac{1-x}{4 } [/tex]
[tex]4-4x=20-20x[/tex]
[tex]-16=-16x[/tex]
[tex]x=1[/tex]
]
