Решебник по математике 5 класс Мерзляк ФГОС Задание 1002

 

\[\boxed{\mathbf{1002\ (1002)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]

\[1)\ 9b + 6b - 0,15 = 6,15\]

\(15b = 6,15 + 0,15\)

\[b = 6,3\ :15\]

\[b = 0,42\]

\[Ответ:0,42.\]

\[2)\ 17x - x + 5x - 1,9 = 17\]

\[21x = 17 + 1,9\]

\[x = 18,9\ :21\]

\[x = 0,9\]

\[Ответ:0,9.\]

\(3)\ 1,7x + 88,42 = 94,2\)

\[1,7x = 94,2 - 88,42\]

\[x = 5,78\ :1,7\]

\[x = 3,4\]

\[Ответ:3,4.\]

\[4)\ 16,4 - 5,4x = 14,78\]

\[5,4x = 16,4 - 14,78\]

\[x = 1,62\ :5,4\]

\[x = 0,3\]

\[Ответ:0,3.\]

\[5)\ 10,2 - 7,4x + 0,88 = 2\]

\[2,8x = 2 - 0,88\]

\[x = 1,12\ :2,8\]

\[x = 0,4\]

\[Ответ:0,4.\]

\(6)\ 0,6y + 0,18y - 2,376 = 5,58\)

\[0,78y = 5,58 + 2,376\]

\[y = 7,956\ :0,78\]

\[y = 10,2\]

\[Ответ:10,2.\]

\[\boxed{\mathbf{1002}\mathbf{.}\mathbf{\ }}\]

\[1)\ \frac{1}{3} < x < \frac{1}{2}\]

\[\frac{8}{24} < x < \frac{12}{24}\]

\[\frac{9}{24} = \frac{3}{8};\ \frac{10}{24} = \frac{5}{12};\ \frac{11}{24}.\]

\[Ответ:\ x = \frac{3}{8};\frac{5}{12};\frac{11}{24}.\]

\[2)\ \frac{3}{5} < x < \frac{4}{5}\]

\[\frac{15}{25} < x < \frac{20}{25}\]

\[\frac{16}{25};\ \ \frac{17}{25};\ \frac{18}{25}.\]

\[Ответ:\ \frac{16}{25};\ \frac{17}{25};\ \frac{19}{25}.\]