Question

Решить уравнение :

3х + 2 × ( х + 5 ) = 9х + 4

Answer 1

Ответ:

$3x + 2 \times (x + 5) = 9x + 4 \\ 3x + 2x + 10 = 9x + 4 \\ 5x + 10 = 9x + 4 \\ 5x - 9x = 4 - 10 \\ - 4x = - 6 \\ x = \frac{6}{4} \\ x = \frac{3}{2} = 1 \frac{1}{2} \\ \\ = = > \\ \ x = 1.5$