-15a + 3 ≥ -a - 17
8 - 5a ≤ -2a - 1
-----
3 + 17 ≥ -a + 15a
8 + 1 ≤ -2a + 5a
20 ≥ 14a
9 ≤ 3a
----
a ≤ 10/7
a ≥ 3
a∈∅
решений нет
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Verified answer
-15a + 3 ≥ -a - 17
8 - 5a ≤ -2a - 1
-----
3 + 17 ≥ -a + 15a
8 + 1 ≤ -2a + 5a
-----
20 ≥ 14a
9 ≤ 3a
----
a ≤ 10/7
a ≥ 3
a∈∅
решений нет