Решите уравнение: 1) - 2/3x + 1 целая1/6 = 1,5x + 12) 1/2y - 1/3 = 5/18 - 8/9y3) 1 целая2/3 : 5 4 целых1/6 : y4) x/1,6 = 1,35/0,365) 5/x + 4 = 8/2x - 1

1) - 2 / 3x + 1 целая 1 / 6 = 1,5x + 1;

-2 / 3x + 1 целая 1 / 6 = 2 / 3 + 1;

-4x + 7 = 9x + 6;

-4x - 9x = 6 - 7;

-13x = - 1;

13x = 1;

x = 1 / 13;

2) 1/2y - 1/3 = 5/18 - 8/9y

36y - 24 = 45 - 64y;

36y + 64y = 45 + 24;

100y = 69;

y = 69 / 100;

y = 0,69;

3) 1 целая2 / 3 : 5 4 целых1 / 6 : y

1 / 3 * 25 / 6 * 1 / x = 25 / 18x;

4) x / 1,6 = 1,35 / 0,36;

5x / 8 = 15 / 4;

20x = 120;

x = 6;

5) 5 / x + 4 = 8 / 2x - 1;

5 / x - 4 / x = - 1 - 4;

1 / x = - 5

1 = - 5x;

x = - 1 / 5;

x ≠ 0;

x = 0,2;