Ответ:
-6(2a-7)+4(-5a-6) =
-12a + 42 - 20a - 24
= -32a + 18=0
a= -18/32 = -9/16
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Ответ:
-6(2a-7)+4(-5a-6) =
-12a + 42 - 20a - 24
= -32a + 18=0
a= -18/32 = -9/16