Question

Помогите срочно по математике ​

Answer 1

$\frac{1}{8} x = \frac{3}{4} \: \: \: x = \frac{3}{4} \div \frac{1}{8} \: \: \: x = \frac{3}{4} \times \frac{8}{1} \\ x = 6$

$12x - 5 = 6x + 7 \\ 12x - 6x = 7 + 5 \\ 6x = 12 \: \: \: x = 2$

$4(x - 1) = 5(x - 2) \\ 4x - 4 = 5x - 10 \\ 4x - 5x = - 10 + 4 \\ - x = - 6 \: \: \: \: \: x = 6$

$6 {x}^{2} + 8x = 0 \\ 2x(3x + 4) = 0 \\ 2x = 0 \: \: \: \: x = 0 \\ 3x + 4 = 0 \\ 3x = - 4 \\ x = - \frac{4}{3} \: \: \: \: x = - 1 \frac{1}{3}$

последний не смогла