[tex]\dfrac{10ac-x}{11}=-3\ \ \ \ |multiply\ both\ sides\ by\ 11\\\\10ac-x=-33\ \ \ \ |add\ x\ to\ both\ sides\\\\10ac=-33-x\\\\10ac=-(33+x)\ \ \ \ \ |divide\ both\ sides\ by\ 10c\\\\\boxed{a=-\dfrac{33+x}{10c}}[/tex]
[tex]10ac-\dfrac{x}{11}=-3\ \ \ \ |multiply\ both\ sides\ by\ 11\\\\110ac-x=-33\ \ \ \ |add\ x\ to\ both\ sides\\\\110ac=-33-x\\\\110ac=-(33+x)\ \ \ \ |divide\ both\ sides\ by\ 110c\\\\\boxed{a=-\dfrac{33+x}{110}} [/tex]
