Question

помогите пожалуйста ​

Answer 1

а)

$\frac{1}{3} x = 12$

$3*\frac{1}{3} x = 3 * 12$

$x = 36$

б)

$6x - 10,2 = 0$

$6x = 10,2$

$x = 1,7$

в)

$5x - 4,5 = 3x + 2,5$

$5x - 3x = 2,5 + 4,5$

$2x = 7$

$x = \frac{7}{2}$

г)

$2x - (6x - 5) = 45$

$2x - 6x + 5 = 45$

$-4x + 5 = 45$

$-4x = 45 - 5$

$-4x = 40$

$x = -10$