.........................
-х-(-1,2)=-0,8
-х=-0,8-1,2
-х=-2
х=2
3,1+-h=-2 4/5
-h=-2 4/5-3.1
-h=-5.9
h=5.9
-0.6--y=-0.4
0.6+y=-0.4
y=-0.4+0.6
y=0.2
1)(х - 5.3\21) + 2.6\7 = 9.1\14;
Х-5 3/21=9 1/14-2 6/7;
Х-5 3/21=6 15/14-12/14;
Х=6 3/14+5 3/21;
Х=11 9/42+6/42; х=11 15/42;
Х=11 5/14; ////
2) 14.2\5-(x+8.2\15)=1.1\10;
Х+8 2/15=14 2/5-1 1/10;
Х+8 2/15=13 4/10-1/10;
Х=13 3/10-8 2/15;
Х=5 3/10-2/15;
Х=5 9/30-4/30;
Х=5 5/30;
Х=5 1/6