Решите уравнения: a) (1 целая 7/8x - 2 целые1/3) * 24

1. a) (1 7/8x 2 1/3) * 24 = 4;

1 7/8х 2 1/3 = 24 / 4;

1 7/8х 2 1/3 = 6;

1 7/8х = 6 2 1/3;

1 7/8х = 3 2/3;

х = (3 2/3) / (1 7/8);

х = 11/3 / 15/8;

х = 88/45;

х = 1 43/45.

Ответ: 1 43/45.

б) 30 * (1 5/6x + 3 1/5) = 231;

1 5/6x + 3 1/5 = 231 / 30;

1 5/6x + 3 1/5 = 7 7/10;

1 5/6х = 7 7/10 - 3 1/5;

1 5/6х = 77/10 16/5;

1 5/6х = 77/10 32/10;

1 5/6х = 45/10;

х = (45/10) / (1 5/6);

х = 45/10 / 11/6;

х = 27/11;

х = 2 5/11.

Ответ: х = 2 5/11.