25 = k*x1 20 = x + x1
40 = k*x2 25 = x + x2
x2 = 40/25 * x1 5 = x2 - x1 = 1,6*x1 - x1 = 0,6x1 x1 = 25/3
x = 20 - 25/3 = 35/3
25 = k*x1 20 = x + x1
40 = k*x2 25 = x + x2
x2 = 40/25 * x1 5 = x2 - x1 = 1,6*x1 - x1 = 0,6x1 x1 = 25/3
x = 20 - 25/3 = 35/3