Автор - anyav2107

помогите сократить дробь

Ответ

Автор - adelvouqu

1.

 frac{49k {(z - y)}^{2}}{ {7k}^{2} {(y - z) }^{2}  }   = frac{49k {(z - y)}^{2}} {  - {7k}^{2} {(z - y) }^{2}  }  =  : frac{49k } {  - {7k}^{2}   }   =  frac{7}{ - k}

2.

 frac{4(u - v) times (u + v)}{8(u + v) times (u - v)}  =  frac{4}{8}  =  frac{1}{2}

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