Решите уравнение. а) x+2=4-x б) 3x+1=5x-3 в) 2x-3=2-3x г) 2x+3=3x-7 д)

Вычислим корешки уравнений: 

а) x + 2 = 4 - x; 

x + x = 4 - 2;

x * (1 + 1) = 2;

2 * x = 2;

x = 2/2;

x = 1.

б) 3 * x + 1 = 5 * x - 3; 

3 * x - 5 * x = -3 - 1;

x * (3 - 5) = -4;

-2 * x = -4;

2 * x = 4;

x = 4/2;

x = 2.

в) 2 * x - 3 = 2 - 3 * x; 

2 * x + 3 * x = 2 + 3;

5 * x = 5;

x = 5/5;

x = 1.

г) 2 * x + 3 = 3 * x - 7; 

2 * x - 3 * x = -7 - 3;

-x = -10;

x = 10.

д) 9 * x - 2 = 5 * x - 2; 

9 * x - 5 * x = -2 + 2;

4 * x = 0;

x = 0/4;

x = 0.

е) 10 - 3 * x = 2 * x - 15; 

-3 * x - 2 * x = -15 - 10; 

5 * x = 25; 

x = 25/5; 

x = 5.