-6х-4(9-7х)=-5х+1
-6x-36+28x=-5x+1
-6x+28x+5x=36+1
27x=37
x=37/27 или
6х -4 (9-7х)=-5х+1 6х-36+28х+5х-1=0 39х-37=0 39х=37 Х=37/39
-6х-4(9-7х)=-5х+1
-6x-36+28x=-5x+1
-6x+28x+5x=36+1
27x=37
x=37/27 или
6х -4 (9-7х)=-5х+1 6х-36+28х+5х-1=0 39х-37=0 39х=37 Х=37/39