7,5*x+15*(230-x)*0,58+15*(230-x)*0,58*0,58+7,5*x*0,72=6525
\(7,5*x+15*(230-x)*0,58+15*(230-x)*0,58*0,58+7,5*x*0,72=6525\)
\(Man, you \ can \ do \ it \ yourself \ with \ a \ pocket \ calculator \ and \ some \ diligence.\)
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