З+С+Б=73
З+С=44
З+Б=52
44+Б=73
Б=29
З+29=52
З=23
23+С=44
С=21
23+21+29=73
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З+С+Б=73
З+С=44
З+Б=52
44+Б=73
Б=29
З+29=52
З=23
23+С=44
С=21
23+21+29=73