17 х - 30 (1,2 - х) = - 83 

[latex]17x-30(1.2-x)=-83[/latex] [latex]17x-36+30x=-83[/latex] [latex]47x-36=-83[/latex] [latex]47x=-83+36[/latex] [latex]47x=-47[/latex] [latex]x=-1[/latex]