Ответ:
a = 1,63
6 - 3a + 6.3 = 7а - 4
-3а - 7а = -4 -6 -6.3
-10а = -16.3
-16.3 / -10 = 1.63
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Ответ:
a = 1,63
6 - 3a + 6.3 = 7а - 4
-3а - 7а = -4 -6 -6.3
-10а = -16.3
-16.3 / -10 = 1.63