Question

помогите пж
8,6х-5,5х=15,81;

Answer 1

Ответ:

$8.6x - 5.5 x = 15.81 \\ 3.1x = 15.81 \\ x = 15.81 \div 3.1 \\ x = 5.1$

Answer 2

Ответ:

8,6x-5,5x=15,81

3,1x=15,81

x=5,1