а) 4 4/9:(2/3 х +14)=5/27
2/3 х +14=4 4/9:5/27
2/3х +14=24/1
2/3х =24/1-14
2/3.х =22 6/10
х =22 6/10.2/3
х =15 1/15
Б)(0,85х-1,72):1,3=2,6
0,85х-1,72=2;6:1,3
0,85х-1,72= 2
0,85х = 1,72-2
0,85.х=1,70
х=1,70:0,85
х=2
