[tex]\large\bm{0 = 8( - d + 6) - (d) - ( - 6 - 4)} \\ \large\bm{0 = - 8d + 48 - d - ( - 6 - 4)} \\ \large\bm{0 = - 8d + 48 - d - ( - 10)} \\ \large\bm{0 = - 8d + 48 - d + 10} \\ \large\bm{0 = - 9d + 48 + 10} \\ \large\bm{0 = - 9d + 58} \\ \large\bm{9d = 58} \\ \bm{\large\boxed{\boxed{  { \large \bm{ d = \dfrac{58}{9} }}}}}[/tex]

[tex]{\large\boxed{\boxed{  { \large \bm{ Bons~Estudos} }}}}[/tex]