1) x-(-17.85) = 12x + 17.85 = 12x = 12 - 17.85x = -5.85
2) 7.8 - x = 9.3x = 7.8 - 9.3x = -1.5
Ответ: x1 = -5.85, x2 = -1.5.
1) x-(-17.85) = 12
x + 17.85 = 12
x = 12 - 17.85
x = -5.85
2) 7.8 - x = 9.3
x = 7.8 - 9.3
x = -1.5
Ответ: x1 = -5.85, x2 = -1.5.