-3(x-1) = 9 please show work and steps and find what x is thankss

$$\begin{array}{rll}
-3(x-1)&=&9\\
(x-1)&=&-3\qquad \mbox{divide both sides by minus 3}\\
x-1+1&=&-3+1\\
x&=&-2
\end{array}$$

 

now you should sub x=-2 into the original equation to check that it works.