Question

решите уравнение: 5/9 + (х- 2/9 ) = 7/9

Answer 1

 5/9 + (х- 2/9 ) = 7/9

3/9+х=7/9

х=4/9

Answer 2

5/9+х-2/9=7/9

х+3/9=7/9

х+1/3=7/9

х=7/9-1/3

х=4/9