Question

Решите восьмой номер!

Answer 1

5≤x<8⇒5/2≤x/2<8/2⇒2,5≤x/2<4
1≤y≤2⇒-2≤-y≤-1
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2,5≤x/2<4
-2≤-y≤-1
2,5-2≤x/2-y<4-1
0,5≤x/2-y<3