0,5х-2,5+1,6=0,4х-1,2
0,5х-0,4х=2,5-1,6-1,2
0,1х=-0,3
Х=-0,3:0,1
Х=-3
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0,5х-2,5+1,6=0,4х-1,2
0,5х-0,4х=2,5-1,6-1,2
0,1х=-0,3
Х=-0,3:0,1
Х=-3