2(3x - 0,5) = 5x - (3x + 4)
6x - 1 = 5x - 3x - 4
6x - 1 = 2x - 4
6x - 2x = 1 - 4
4x = - 3
x = - 3 : 4
x = - 0,75
(x - 7)² = x(x + 2)
x² - 14x + 49 = x² + 2x
x² - 14x - x² - 2x = - 49
- 16x = - 49
x = - 49 : (- 16)
x = 3,0625
2(3x - 0,5) = 5x - (3x + 4)
6x - 1 = 5x - 3x - 4
6x - 1 = 2x - 4
6x - 2x = 1 - 4
4x = - 3
x = - 3 : 4
x = - 0,75
(x - 7)² = x(x + 2)
x² - 14x + 49 = x² + 2x
x² - 14x - x² - 2x = - 49
- 16x = - 49
x = - 49 : (- 16)
x = 3,0625