Х -У =33
<span>0,3Х = 2/3У Х = 2/3х0,3=20/9У </span>
<span> </span><span> подставляем в уравнение 20/9У -У= 33 </span>
<span> 2 2/9У -У = 33 </span>
<span> 1 2/9У = 33 </span>
<span> 11/9 У = 33 </span>
<span> У = 27<span> Х =27+33= 60
</span></span>