1 - (x - 0.3) = 1 - x + 0.3 = 1 + 0.3 - x = 1.3 - x = 9
Проверка1 - (-7.7 - 0.3) = 1 + 7.7 + 0.3 = 9
Ответ: x = -7.7
1 - (x - 0.3) =
x = 9 - 1.3x = 7.1 - x + 0.3 =
1 + 0.3 - x =
1.3 - x = 9
x = -7.7
Проверка
1 - (-7.7 - 0.3) = 1 + 7.7 + 0.3 = 9
Ответ: x = -7.7