Найдите корень уравнения: 1) (-15x - 6) 0 3 = 72; 2) -7 (4-11x) = -42.

Решение:

1. \( (-15x - 6) \cdot 3 = 72 \)
1. \( -45x - 18 = 72 \)
2. \( -45x = 72 + 18 \)
3. \( -45x = 90 \)
4. \( x = \frac{90}{-45} \)
5. \( x = -2 \)
2. \( -7(4-11x) = -42 \)
1. \( 4 - 11x = \frac{-42}{-7} \)
2. \( 4 - 11x = 6 \)
3. \( -11x = 6 - 4 \)
4. \( -11x = 2 \)
5. \( x = \frac{2}{-11} \)
6. \( x = -\frac{2}{11} \)

Ответ: 1) x = -2; 2) x = -⅐.