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