[tex] \frac{1}{2} (29 - x) = 7.75[/tex]
[tex] \frac{1}{2} ( - x + 29) = 7.75[/tex]
[tex] \frac{1( - x + 29)}{2} = 7.75[/tex]
[tex] \frac{ - x + 29}{2} = 7.75[/tex]
[tex]2· \frac{ - x + 29}{2} = 2·7.75[/tex]
[tex] - x + 29 = 2·7.75[/tex]
[tex] - x + 29 = 15.5[/tex]
[tex] - x + 29 = 15.5 - 29[/tex]
[tex] - x = - 13.5[/tex]
[tex] \frac{ - x} {- 1} = \frac{ - 13.5 }{ - 1 } [/tex]
[tex]x = 13.5[/tex]
So, the value of x is 13.5.
