Ответ:
1,4х-17=3(0,2х-7)
1,4х-17=0,6х-21
1,4х-0,6=-21+17
0,8х=-4
х=-5
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Ответ:
1,4х-17=3(0,2х-7)
1,4х-17=0,6х-21
1,4х-0,6=-21+17
0,8х=-4
х=-5