Respuesta :

Answer:

6-x=-12

-x=-12-6

-x=-18

x=18

Step-by-step explanation:

subtract 6 from both sides becuse  -6 is the oppiste of +6

6-6=0

-12-6= -18

then you divid -1x and -1 and

-1 and -18 because the x cant be a negative