7x – 7(4x – 1) = 1 – 3(5x – 2)
7x – 28x + 7 = 1 – 15x + 6
7x – 28x + 15x = – 7 + 1 + 6
– 6x = 0
Ответ: x = 0
7x – 7(4x – 1) = 1 – 3(5x – 2)
7x – 28x + 7 = 1 – 15x + 6
7x – 28x + 15x = – 7 + 1 + 6
– 6x = 0
Ответ: x = 0