<span>8x+6,1=38,9 </span>
<span>8х=38,9-6,1</span>
<span>8х=32,8</span>
<span>х=32,8:8</span>
<span>х=4,1</span>
<span>
</span>
<span><span>75,6:x=14</span></span>
<span><span>х=75,6:14</span></span>
<span><span>х=5,4</span></span>
<span><span>
</span></span>
<span>
</span>