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�� 595. �� :�) 3� + 5� = 20; �) 2� - 5y = 25; �) 2� - 3� = 5;�) 7� + 5� = 2; �) 2� + 7� = 28; �) 3� + 5� =...

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595. �� :

�) 3� + 5� = 20;

�) 2� - 5y = 25;

�) 2� - 3� = 5;

�) 7� + 5� = 2;

�) 2� + 7� = 28;

�) 3� + 5� = 30.

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