А) 2x - 3 = 42x = 4 + 32x = 7x = 7/2x = 3.5
Б) 6x - 2x + 1 = 54x + 1 = 54x = 5 - 14x = 4x = 4/4x = 1
В) 5 - 2/5x = 11-2/5x = 11 - 5-2/5x = 6x = 6 * (-5/2)x = -15
А) 2x - 3 = 4
2x = 4 + 3
2x = 7
x = 7/2
x = 3.5
Б) 6x - 2x + 1 = 5
4x + 1 = 5
4x = 5 - 1
4x = 4
x = 4/4
x = 1
В) 5 - 2/5x = 11
-2/5x = 11 - 5
-2/5x = 6
x = 6 * (-5/2)
x = -15