Задача 8. Найдите корень уравнения \(x + 3 = -9x\)
Решение
\(x + 3 = -9x\,\,\,\,\,\, \Leftrightarrow \,\,\,\,\,\,x + 9x = -3\,\,\,\,\,\, \Leftrightarrow \)
\( \Leftrightarrow \,\,\,\,\,\,10x = -3\,\,\,\,\,\, \Leftrightarrow \,\,\,\,\,\,x = -\dfrac{3}{{10}}\,\,\,\,\,\, \Leftrightarrow \,\,\,\,\,\,x = -0,3.\)
Ответ: \(-0,3.\)