9x = 189x - 428 + 1959x = 189x - 2339x - 189x = -233-180x = -233x = -233 / -180x ≈ 1.2944
Ответ: x ≈ 1.2944
9x = 189x - 428 + 195
9x = 189x - 233
9x - 189x = -233
-180x = -233
x = -233 / -180
x ≈ 1.2944
Ответ: x ≈ 1.2944