Ответ:
y - 5 / 9y = 3,6
4/9*у=3 3/5
4/9*у=18/5
у=18/5:4/9
у=18/5*9/4
у=81/10=8,1
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Ответ:
y - 5 / 9y = 3,6
4/9*у=3 3/5
4/9*у=18/5
у=18/5:4/9
у=18/5*9/4
у=81/10=8,1