Răspuns:
• 82{91 -[25+(17×5 +3×14-9×3) ÷10]÷35} ÷9
• =82{91 -[25+(85+42-27) ÷10]÷35} ÷9
• =82[91 –(25+100÷10)÷35] ÷9
• =82[91 –(25+10) ÷35] ÷9
• =82[91 –35 ÷35] ÷9
• =82(91-1) ÷9=82×(90÷9)=82×10=820
Explicație pas cu pas: