Respuesta :

[tex]\begin{gathered} 4\times(x+8x)=64 \\ 4\times x+4\times8x=64 \\ 4x+32x=64 \\ 36x=64 \\ x=\frac{64}{36} \\ x=\frac{16}{9} \\ x=1.778 \end{gathered}[/tex]

Thus, the value of x is 1.778.