Решебник по математике 5 класс Ерина Виленкин рабочая тетрадь Часть 1, 2 Часть 2 | Страница 71

\[Стр.\ 71.\]

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\[1)\ может;\]

\[2)\ не\ может;\]

\[3)\ неверно;\]

\[4)\ может;\]

\[5)\ верно;\]

\[6)\ а)\ 2,73 + 2,275 = 5,005;\]

\[\textbf{б)}\ 23,7 - 0,83 = 22,87.\]

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\[\textbf{а)}\ 35 - x = 24,675\]

\[x = 35 - 24,675\]

\[x = 10,325.\]

\[Ответ:10,325.\]

\[\textbf{б)}\ 70,8 - (x - 8,93) = 54,2\]

\[x - 8,93 = 70,8 - 54,2\]

\[x - 8,93 = 16,6\]

\[x = 16,6 + 8,93\]

\[x = 25,53.\]

\[Ответ:25,53.\]

\[\textbf{в)}\ 4,86x + 19,4x - 4,06x =\]

\[= 2020\]

\[20,2x = 2020\]

\[x = 2020\ :20,2\]

\[x = 20\ 200\ :202\]

\[x = 100.\]

\[Ответ:\ \ 100.\]

\[\textbf{г)}\ (43,2 - x) - 5,09 = 14,2\]

\[43,2 - x = 14,2 + 5,09\]

\(43,2 - x = 19,29\)

\[x = 43,2 - 19,29\]

\[x = 23,91.\]

\[Ответ:\ 23,91.\]