4 − 7 − 6(5x − 1) = 1
-3 - 30x + 6 = 1
3 - 30x = 1
-30x = 1 - 3
-30x = -2
$$x = \frac{-2}{-30}$$
$$x = \frac{1}{15}$$
Ответ: x = 1/15