<span> 532-x:2=277</span>
<span>х:2=532-277</span>
<span>х:2=255</span>
<span>х=255*2</span>
<u><span>х=510</span></u>
<span>проверка: 532-510:2=532-255=277</span>
<span>277=277</span>
<span>
</span>
<span><span>14 859-с*9=9 045</span></span>
<span><span>с*9=14859-9045</span></span>
<span><span>с*9=5814</span></span>
<span><span>с=5814:9</span></span>
<u>с=646</u>
14859-646*9=14859-5814=9045
9045=9045