Решите уравнения:
1) (3,6-y)×5,5=(3,8-y)×11
2)0,8y+1,4=04y-2,6
3)0,3×(5X-7)=3×(0,2X+3,2)
4)0,7+0,3×(X+2)=0,4×(X-3)

1.(3,6-y)×5,5=(3,8-y)×1119,8-5.5y=41,8-11y-5,5у+11у=41,8-19,85,5у=22у=42.0,8y+1,4=04y-2,60,8у-0,4у=-2,6-1,40,4у=-4у=-103.0,3×(5X-7)=3×(0,2X+3,2)1,5х-2,1=0,6х+9,61,5х-0,6х=9,6+2,10,9х=11,7х=134.0,7+0,3×(X+2)=0,4×(X-3)0,7+0,3х+0,6=0,4х-1,20,3х-0,4х=-1,2-1,3-0,1х=-2,525

1)-\-  19.8-5.5у=41.8-19.8-5.5у+11у=225.5у=22у=22:5.5у=42)-\-0.8у-0.4у= -2.6-1.40.4у= -4у= -4:0.4у= -103)-\-1.5х-2.1=0.6х+9.61.5х-0.6х=2.1+9.60.9х=11.7х=11.7:0.9х= 134)-\-0.7+0.3х-0.6=0.4х-1.20.3х-0.4х= -1.2-0.6-0.7-0.1х=2.5х=2.5:(-0.1)х= -25