1) 16 х-3=8 х-43 2) 1,4-0,6 (2 х-3) = 5 (0,3 х+13,6) 3) (4 у+6) х (1,8-0,2 у) = 0 4) 2/x/-3=x+8

Найдем корни.

1) 16 * х - 3 = 8 * х - 43;

16 * x - 8 * x = - 43 + 3;

8 * x = - 40;

x = - 40/8;

x = - 5.

2) 1,4 - 0,6 * (2 * х - 3) = 5 * (0,3 * х + 13,6);

1.4 - 1.2 * x + 1.8 = 1.5 * x + 68;

3.2 - 1.2 * x = 1.5 * x + 68;

1.5 * x + 1.2 * x = 3.2 - 68;

2.7 * x = - 64.8;

x = - 64.8/3.2;

x = - 20.25.

3) (4 * у + 6) х (1,8 - 0,2 * у) = 0;

{ 4 * y + 6 = 0;

1.8 - 0.2 * y = 0;

{ 4 * y = - 6;

0.2 * y = 1.8;

{ y = - 3/2;

y = 9;

{ y = - 1.5;

y = 9.

4) 2/x / - 3 = x + 8;

{ 2 * x - 3 = x + 8;

-2 * x - 3 = x + 8;

{ 2 * x - x = 8 + 3;

-2 * x - x = 8 + 3;

{ x = 11;

-3 * x = 11;

{ x = 11;

x = - 11/3.