Verified answer

Ответ:

[tex]0.(714285)[/tex]

Пошаговое объяснение:

[tex]64 \div 72 = (7y + 3) \div 9[/tex]

[tex] \frac{64}{72} = \frac{7y + 3}{9} [/tex]

[tex](7y + 3) \times 72 = 64 \times 9 \\ 504y + 216 = 576 \\ 504y = 576 - 216 \\ 504y = 360 \\ y = 360 \div 504 \\ y = 0.(714285)[/tex]