Решите уровнение:22+5х=88+6х,-8х+45=-15-4х,-3х-17=8х-105,21-3у=2(у-3)

Найдем корешки.

1) 22 + 5 * х = 88 + 6 * х;

Приведем к виду a * x = b.

5 * x - 6 * x = 88 - 22;

5 * x - 6 * x = 66;

x * (5 - 6) = 66;

x * (-1) = 66;

-1 * x = 66;

x = -66/1;

x = -66.

2) -8 * х + 45 = -15 - 4 * х;

-8 * x +  4 * x = -15 - 45;

8 * x - 4 * x = 15 + 45;

4 * x = 60;

2 * x = 30;

x = 30/2;

x  = 15.

3) -3 * х - 17 = 8 * х - 105;

-3 * x - 8 * x = -105 + 17;

-11 * x = -100 + 12;

-11 * x = -90 + 2;

-11 * x = -88;

11 * x = 88;

x = 88/11;

x = 8.

4) 21 - 3 * у = 2 * (у - 3); 

21 - 3 * y = 2 * y - 6; 

-3 * y - 2 * y = -6 - 21; 

-5 * y = -27; 

y = 27/5; 

y = 5.4.