Решение:
5(5x - 1) - 2.7x + 0.2x = 6.5 - 0.5x25x - 5 - 2.7x + 0.2x = 6.5 - 0.5x(25 - 2.7 + 0.2)x - 5 = 6.5 - 0.5x(22.5)x - 5 = 6.5 - 0.5x22.5x - 5 = 6.5 - 0.5x22.5x + 0.5x = 6.5 + 523x = 11.5x = 11.5 / 23x = 0.5
Ответ: x = 0.5
Решение:
5(5x - 1) - 2.7x + 0.2x = 6.5 - 0.5x
25x - 5 - 2.7x + 0.2x = 6.5 - 0.5x
(25 - 2.7 + 0.2)x - 5 = 6.5 - 0.5x
(22.5)x - 5 = 6.5 - 0.5x
22.5x - 5 = 6.5 - 0.5x
22.5x + 0.5x = 6.5 + 5
23x = 11.5
x = 11.5 / 23
x = 0.5
Ответ: x = 0.5