Răspuns:
Explicație pas cu pas:
[2·x - 0,(2)] : 0,3(5) = 25,(5) <=>
(⁹⁾2·x - 2/9) : [(35-3)/90] = (255-25)/9 <=>
[(18x -2)/9 ] : (32/90) = 230/9 <=>
[(18x-2)/9] · 90/32 = 230/9 <=>
(18x-2)·10/32 = 230/9 <=>
(18x-2) ·5/16 = 230/9 =>
18x-2 = 230/9 : 5/16 =>
18x-2 = 230/9 · 16/5 =>
18x-2 = 46·16/9 =>
(18x-2)·9 = 46·16 =>
162x - 18 = 736 =>
162x = 736+18 = 754
x = 754/162
x = 377/81
