\[\boxed{\text{37\ (37).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1) - 3 \cdot (x - 4) = 5x - 12\]
\[- 3x + 12 = 5x - 12\]
\[- 3x - 5x = - 12 - 12\]
\[- 8x = - 24\]
\[x = - 24\ :( - 8)\]
\[x = 3\]
\[Ответ:\ x = 3.\]
\[2)\ (16x - 5) - (3 - 5x) = 6\]
\[16x - 5 - 3 + 5x = 6\]
\[21x = 6 + 8\]
\[21x = 14\]
\[x = 14\ :21 = \frac{14}{21}\]
\[x = \frac{2}{3}\]
\[Ответ:x = \frac{2}{3}.\]
\[3)\ 26 - 4x = 3x - 7 \cdot (x - 3)\]
\[26 - 4x = 3x - 7x + 21\]
\[- 4x - 3x + 7x = 21 - 26\]
\[0x = - 5\]
\[Ответ:корней\ нет.\]
\[- 6 + 8x + 10 - 8x = 4\]
\[0x = 4 - 4\]
\[0x = 0\]
\[Ответ:корень\ уравнения -\]
\[любое\ число.\]