Реши уравнение;
1,2х + 5,6 +4,8х= 17,06
3х + 1,3х +6,7х =122
6,7х +9х + 3,3х = 57

1,2х + 5,6 +4,8х= 17,066х=11,46х=11,46/6х=1,913х + 1,3х +6,7х =12211х=122х=122/11х=11  1/116,7х +9х + 3,3х = 5719х=57х=57/19х=3