124-24 * (480:x-58) = 28

124 - 24 * (480/x - 58) = 28;

Разделим уравнение на 2.

124/2 - 24/2 * (480/x - 58) = 28/2;

62 - 12 * (480/x - 58) = 14;

62/2 - 12/2 * (480/x - 58) = 14/2;

31 - 6 * (480/x - 58) = 7;

31 - 7 = 6 / (480/x - 58);

24 = 6 / (480/x - 58);

Сократим на 6 уравнение.

4 = 1 / (480/x - 58);

4 * (480/x - 58) = 1;

480/x - 58 = ¼;

480/x * x - 58 * x = ¼ * x;

480 - 58 * x = ¼ * x;

480 * 4 - 58 * 4 * x = x;

1 920 - 232 * x = x;

232 * x + x = 1 920;

233 * x = 1 920;

x = 1 920/233.