Задание 4. Найдите корень уравнения. 1) 7x+6=3x 2) 3+4x=9x-11 3) 2(x+5)=-9

1) 7x + 6 = 3x 7x - 3x = -6 4x = -6 x = \(\frac{-6}{4} = -\frac{3}{2} = -1,5\) 2) 3 + 4x = 9x - 11 4x - 9x = -11 - 3 -5x = -14 x = \(\frac{-14}{-5} = \frac{14}{5} = 2,8\) 3) 2(x + 5) = -9 2x + 10 = -9 2x = -9 - 10 2x = -19 x = \(\frac{-19}{2} = -9,5\)