Answer:
x=2
Explanation:
i'm not sure how to do the modeling and the grouping part but here's the solve and check portion. I hope i helped a little!
solve;
3x=6 divide each side by 3 to isolate x
x=2
check;
plug 2 into x and see if the statement is true.
3(2)=6
6=6 true? yes.