5*(3х-5)-3(5х-3)<=1-7х
15х-25-15х+9<=1-7х
7х<=1+16
7х<=17
х<=17/7
х<=2 3/7
ответ:[-бесконечности;2 3/7]
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5*(3х-5)-3(5х-3)<=1-7х
15х-25-15х+9<=1-7х
7х<=1+16
7х<=17
х<=17/7
х<=2 3/7
ответ:[-бесконечности;2 3/7]