1)\cfrac{x-5}{3}= 7; x-5= \dots 2) \cfrac{84}{9-y}=21.
Задание

Реши уравнения

  1. \(\cfrac{x-5}{3}= 7\) ;

\(x-5= \dots\)

  1. \(\cfrac{84}{9-y}=21\) .