Question

Помогите решить, пжл, 2 уравнения:
11/18х-2/9=5/12х+1 1/3
2/3 (4 1/2х-3\5)-5\7 (7\17х-7\9)=-1 32\45
Спасибо!

Answer 1

Ответ:

3) 11/18х - 2/9 = 5/12х + 1(1/3);

11/18х - 5/12х = 1(1/3) + 2/9;

22/36х - 15/36х = 1(3/9) + 2/9;

7/36х = 1(5/9);

х = 14/9 * 36/7.

Пошаговое объяснение:

2/3 * (4(1/2)х - 3/5) - 5/7 * (7/15х - 7/9) = -1(32/45).

2/3*(9/2х - 3/5) - 1/3х + 5/9 = -1(32/45);

3х - 2/5 - 1/3х = -1(32/45) - 5/9;

2(2/3)х = -1(32/45) - 25/45 + 18/45;

2(2/3)х = -1(13/15);

х = -28/15 * 3/8;

х = -0,7.