Question

решите уравнение 4/9 x + 1/3 x = 6,3

Answer 1

4/9x + 1/3x = 6.3
4/9x + 3/9x = 6.3
7/9x = 6.3
7x = 6.3*9
x = 6.3/7  * 9 = 0.9 * 9 = 8.1

Answer 2

спасибо!