Реши уравнение х-80=280+2 х-85=310+15045-х=11+7 х-27=78+14 х*6=39+3 х: 8=19-10

Найдем корни:

1) х - 80 = 2;

x = 2 + 80;

x = 82.

2) 80 + 2 * х - 85 = 310 + 150;

2 * x - 5 = 460;

2 * x = 460 - 5;

2 * x = 455;

x = 455/2;

x = 227.2;

3) 45 - х = 1;

-x = 1 - 45;

-x = - 44;

x = 44;

4) 1 + 7 * х - 27 = 7;

7 * x - 26 = 7;

7 * x = 26 + 7;

7 * x = 33;

x = 33/7;

5) 8 + 14 * х + 6 = 3;

14 + 14 * x = 3;

14 * x = 3 - 14;

14 * x = - 11;

x = - 11/14;

6) 9 + 3 * х/8 = 19 - 10;

9 + 3/8 * x = 9;

3/8 * x = 9 - 9;

3/8 * x = 0;

x = 0.