Ответ:
0,6-1,6(х-4)=3(7-0,4х)
0,6-1,6х+6,4=21-1,2х
7-1,6х=21-1,2х
-1,6х+1,2х=21-7
-0,4х=14
х=-35
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Ответ:
0,6-1,6(х-4)=3(7-0,4х)
0,6-1,6х+6,4=21-1,2х
7-1,6х=21-1,2х
-1,6х+1,2х=21-7
-0,4х=14
х=-35