<span><span>{<span><span>0,3x−0,5y=0
</span><span>0,1x+2y=6,5</span></span></span>⇒
</span><span><span>{<span><span>y=0,6x</span><span>0,1x+2y=6,5</span></span></span>⇒
</span><span><span>{<span><span>y=0,6x</span><span>0,1x+2<span>(<span>0,6x</span>)</span>=6,5</span></span></span>⇒
</span><span><span>{<span><span>y=0,6x</span><span>1,3x−6,5=0</span></span></span>⇒
</span><span><span>{<span><span>y=0,6x</span><span>x=5</span></span></span>⇒
</span><span>{<span><span>y=3</span><span>x=5</span></span></span>Ответ:<span><span>(<span>5;3</span>)</span></span>