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[48+50x100:(28:a+3x2)-14]x[(50-4x5)+(143-4x6)]=42316

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Ipv05
Notăm (28:a+6) cu y. (48+50x100:y-14)x[(50-20)+(143-24)]=42316 (48+5000:y-14)x(30+119)=42316 (48+5000:y-14)×149=42316 48+5000:y-14=42316:149 48+5000:y-14=284 5000:y=284-48+14 5000:y=250 y=5000:250 y=20 28:a+6=20 28:a=20-6 28:a=14 a=28:14 a=2

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