Ответ:
с+d=130,c-d=50,c=90,c-d=20,d=70,c+d=210,c=140,c-d=60,d=800,c+d=2200,c=1400,c-d=0
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Ответ:
с+d=130,c-d=50,c=90,c-d=20,d=70,c+d=210,c=140,c-d=60,d=800,c+d=2200,c=1400,c-d=0