Предмет: Математика, автор: Апикун

x·5+138000=138455
Пожалуйста!!!!
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Автор ответа: violetta2410
0
Х×5+138.000=138.555                                       1)138455-138000=455
X=138455-138000 :5                                          2)455:5=91
X=91
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91 ×5+138000=138455
                   138455=138455
Ответ:91                                                          
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