Автор - vadaniilvasilev96135

 frac{3x + 2}{5x}  -   frac{5x + 3y}{10xy}  =
 frac{x - 2}{2x - 6 }  -  frac{x - 1}{3x - 9}  =
 frac{15x}{5 - x}  - 3x =

Ответ

Автор - Almazik239

1) frac{3x + 2}{5x}-frac{5x + 3y}{10xy} = frac{2y(3x+2) - 5x - 3y}{10xy} = frac{6xy+y-5x}{10xy}

2) frac{x - 2}{2x - 6 }-frac{x - 1}{3x - 9}= frac{3(x-2)-2(x-1)}{2*3*(x-3)} = frac{3x-6-2x+2}{6(x-3)} = frac{x-4}{6x-18}

3) frac{15x}{5 - x}- 3x = frac{15x-3x(5-x)}{5-x} = frac{15x-15x+3x^2}{5-x} = frac{3x^2}{5-x}

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