4(1 – 5x) = 9 – 3(6x – 5)
4 – 20x = 9 – 18x + 15
– 20x + 18x = – 4 + 9 + 15
– 2x = 20
Ответ: x = – 10
4(1 – 5x) = 9 – 3(6x – 5)
4 – 20x = 9 – 18x + 15
– 20x + 18x = – 4 + 9 + 15
– 2x = 20
Ответ: x = – 10