А) 3 х+2=0 б) 3-5 х=0 в) 8 х-5=х-40 г) 7 у+21=у-3 д) 9+13 у=35+26 у е) 6 х + (3 х-2) = 14 ж) 8 у - (7 у-142) = 51 з) (6 х+1) - (3-2 х) = 14 и) (6-2 х) + 4=-5 х-3

Давайте решим несколько линейных уравнений:

1) 3x + 2 = 0;

3x = - 2;

x = - 2/3;

2) 3 - 5x = 0;

-5x = - 3;

x = - 3 : (-5);

x = 3/5.

3) 8x - 5 = x - 40;

8x - x = - 40 + 5;

x (8 - 1) = - 35;

7x = - 35;

x = - 35 : 7;

x = - 5;

4) 7y + 21 = у - 3;

7y - y = - 3 - 21;

y (7 - 1) = - 24;

6y = - 24;

y = - 24 : 6;

y = - 4;

5) 9 + 13y = 35 + 26y;

13y - 26y = 35 - 9;

y (13 - 26) = 26;

-13y = 26;

y = 26 : (-13);

y = - 2.

6) 6x + (3x - 2) = 14;

6x + 3x - 2 = 14;

6x + 3x = 14 + 2;

x * (6 + 3) = 16;

9 * x = 16;

x = 16 : 9;

x = 1 7/9.