0.21x -0.091x + 0.35 = 0.420.119x + 0.35 = 0.420.119x = 0.42 - 0.350.119x = 0.07x = 0.07 / 0.119x = 0.58824
Ответ: x = 0.58824
0.21x -0.091x + 0.35 = 0.42
0.119x + 0.35 = 0.42
0.119x = 0.42 - 0.35
0.119x = 0.07
x = 0.07 / 0.119
x = 0.58824
Ответ: x = 0.58824