3,8x-2,12x+8,32x=123
68x+8.32x-123=0
10x-123=0
x=123/10
x=12.3
27,2:(а+13,4)=0,17a+13,4=27,2:0,17a+13.4-160=0 a-146.6=0
a=146.6
26,6:(14,5+y)=0,19
14,5+y=26,6:0,19
14.5+y-140=0
-125.5+y=0
y=125.5
10х=123
х=12.3
2)решаем системой:
0.17(а+13.4)=27.2
а+13.4=160
а=146.6
3)0.19(14.5+у)=26.6
14.5+у=140
у=125.5
3,8x-2,12x+8,32x=123
68x+8.32x-123=0
10x-123=0
x=123/10
x=12.3
27,2:(а+13,4)=0,17
a+13,4=27,2:0,17
a+13.4-160=0
a-146.6=0
a=146.6
26,6:(14,5+y)=0,19
14,5+y=26,6:0,19
14.5+y-140=0
-125.5+y=0
y=125.5