<span>1.</span>
Одно число х,
<span>другое (очевидно, большее) 4,5х. </span>
<span>Уравнение: </span>
<span>4,5х-54=х+72 </span>
<span>решаем </span>
<span>3,5х=126 </span>
<span>х=36 - одно число. </span>
<span>36*4,5=162 - другое число.</span>
<span>2.</span>
<span>а)<span>-27х+220=-5х</span></span>
<span><span>-27+5х=220</span></span>
<span><span>-22х=220</span></span>
<span><span>х=-10</span></span>
<span><span>б)<span>7а=-310+3а</span></span></span>
<span><span><span>7а-3а=-310</span></span></span>
<span><span><span>4а=-310</span></span></span>
<span><span><span>а=-310:4</span></span></span>
<span><span><span>а=-77,5</span></span></span>
<span><span><span>в)<span>-2х+16=5х-19</span></span></span></span>
<span><span><span><span>-2х-5х=-19-16</span></span></span></span>
<span><span><span><span>-7х=-35</span></span></span></span>
<span><span><span><span>х=5</span></span></span></span>
<span><span><span><span>всёёёё))удачи)))</span></span></span></span>