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16+16·10:[7+2·(100:a·3):24]-18=18

Răspuns :

16+16×10:[7+2×(100:a×3):24]-18=18
16+16×10:[7+2×(100:a×3):24]=18+18=36
16×10:[7+2×(100:a×3):24]=36-16=20
10:[7+2×(100:a×3):24]=20:16=1,25
7+2×(100:a×3):24=1,25×10=12,5
7+2×(100:a×3)=12,5×24=300
2×(100:a×3)=300-7=293
100:a×3=293:2=146,5
100:a=146,5:3=48,8(3)
a=48,8(3)×100
a=4883