Автор - leila55571

а-750=1000-920, 955-b=120+325

Ответ

Автор - Ameliа
а-750=1000-920а-750=1000-920
а-750=80
а=750+80
а=830
830-750=1000-920
80=80
955-b=120+325
955-b=120+325
955-b=445
b=955-445 
b=510
955-510=120+325
445=445

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