Предмет: Математика, автор: rvkppokvv

2/9х=0,8(138-х) решите пожалуйста уравнение

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Автор ответа: barracuda1313

2/9х=0,8(138-х)
2/9х=110,4-0,8х

2/9х+8/10х=110,4
20/90х+72/90х=110,4
92/90х=110,4
46х/45=110,4
46х=110,4*45
46х=4968
х=4968/46
х=108

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