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Автор - умник173

решите уравнение пожалуйста
43x+72=502
67-21y=25

Ответ

Автор - cherkassovairina
43х=502-72
43х=430
43х=430/43
х=10
-21у=25-67
-21у=-42
у=-42/(-21)
у=2

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