При каких зна­че­ни­ях a вы­ра­же­ние 5a + 9 при­ни­ма­ет от­ри­ца­тель­ные зна­че­ния?
1) a > -9/5
2) a<-5/9
3) a>-5/9
4) a<-9/5
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