Х-(7 5/9-5 1/6)=-3,5
Х-(7 5/9 - 5 1/6) = -3,5 х-7 5/9+5 1/6=-3 5/10 х=7 5/9-5 1/6-3 5/10(3 1/2) х=68/9-31/6-7/2 х=(136-93-63)/18 х=-20/18 х=-1 1/9