Question

Уравнение
2,8 • (10,4 - 2x)=11,2

Answer 1

29,12 - 5,6х = 11,2
29,12 - 11,2 = 5,6х
17,92= 5,6х
х= 17,92 : 5,6 = 3.2

Answer 2

2.8 * 10.4 - 2.8 * 2х= 11.2
29.12 - 5.6х= 11.2
5.6х= 29.12- 11.2
5.6х= 17.92
х= 17.92: 5.6
х= 3.2
2.8* 10.4- 2.8* 2* 3.2= 11.2
                          11.2= 11.2