We have to express the given problem as an equation. Notice that "is" means equality and less than means a subtraction. Having said that, we can express the following.
[tex]12x+8=6-7[/tex]Then, we solve for x. First, we subtract 8 on each side.
[tex]\begin{gathered} 12x+8-8=6-7-8 \\ 12x=-9 \\ \end{gathered}[/tex]Then, we divide the equation by 12.
[tex]\begin{gathered} \frac{12x}{12}=-\frac{9}{12} \\ x=-\frac{3}{4} \end{gathered}[/tex]At last, we multiply each side by 8 to find the value for 8x.
[tex]\begin{gathered} 8x=-\frac{3}{4}\cdot8 \\ 8x=-\frac{24}{4} \\ 8x=-6 \end{gathered}[/tex]
