Решебник по математике 5 класс Мерзляк ФГОС Задание 1447

\[\boxed{\ \mathbf{1447}\mathbf{\ (1129)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]

\[1)\ 0,11x + 0,08x = 45,6\]

\[0,19x = 45,6\]

\[x = 45,6\ :0,19\]

\[x = 240\]

\[Ответ:240.\]

\[2)\ x - 0,64x = 2,808\]

\[0,36x = 2,808\]

\[x = 2,808\ :0,36\]

\[x = 7,8\]

\[Ответ:7,8.\]

\[3)\ 7x + 9x + 0,32 = 2,72\]

\[16x = 2,72 - 0,32\]

\[16x = 2,4\]

\[x = 2,4\ :16\]

\[x = 0,15\]

\[Ответ:0,15.\]

\[4)\ 2,4x - 1,5x + 47 = 1919\]

\[0,9x = 1919 - 47\]

\[0,9x = 1872\]

\[x = 1872\ :0,9\]

\[x = 2080\]

\[Ответ:2080.\]

\[5)\ 0,8 \cdot (x - 1,9) = 0,56\]

\[x - 1,9 = 0,56\ :0,8\]

\[x = 0,7 + 1,9\]

\[x = 2,6\]

\[Ответ:2,6.\]

\[6)\ 0,32 \cdot (x + 1,4) = 73,6\]

\[x + 1,4 = 73,6\ :0,32\]

\[x = 230 - 1,4\]

\[x = 228,6\]

\[Ответ:228,6.\]

\[7)\ (x + 9,14)\ :7,2 = 5\]

\[x + 9,14 = 5 \cdot 7,2\]

\[x = 36 - 9,14\]

\[x = 26,86\]

\[Ответ:26,86.\]

\[8)\ 2,2 - x\ :0,3 = 0,13\]

\[x\ :0,3 = 2,2 - 0,13\]

\[x = 2,07 \cdot 0,3\]

\[x = 0,621\]

\[Ответ:0,621.\]

\[9)\ 5,6\ :(x + 1,6) = 0,08\]

\[x + 1,6 = 5,6\ :0,08\]

\[x = 70 - 1,6\]

\[x = 68,4\]

\[Ответ:68,4.\]

\[10)\ 5,6\ :x + 0,16 = 0,3\]

\[5,6\ :x = 0,3 - 0,16\]

\[x = 5,6\ :0,14\]

\[x = 40\]

\[Ответ:40.\]