Автор - dimazelenini199

решите уравнения 1/3x+1/4x+1/5x=1 19/75

Ответ

Автор - lodyackova

1/3x+1/4x+1/5x=1 19/75

20+15+12/60х=1 19/75

47/60х=1 19/75

х=1 19/75 : 47/60

х=94/75*60/47

х=8/5

х=1 3/5  

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