1/9x=-8/27 5/7x=1 9x=20 -2/7x=8
Х= -8/27 : 1/9 = -8/27 х 9= 2 2/3 х= 1: 5/7 = 1х7/5= 1 2/5 х= 20:9= 2,(2) х=8:-2/7=8х-7/2= -56