<span>11х+6х=408</span>
<span>17х=408</span>
<span>х=408:17</span>
<span>х=24</span>
<span>проверка</span>
<span>11*24+6*24=408</span>
<span>264+144=408</span>
<span>408=408</span>
<span>1) 37689463×5=188447315
2)</span>188447315<span>+456=188447771
3)</span>188447771<span>-45667 =188402104
</span>
1) 50/100 2)80/100 3)35/100 4)75/100 5)18/100 6)32/100