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[48+50×100:(28:a+3×2)-14]×[(50-4×5)+(143-4×6)]=42.316

Răspuns :

Iakabcristina2
[48+50•100:(28:a+6)-14]•(30+119)=42316
[48+5000:(28:a+6)-14]•149=42316
[48+5000:(28:a+6)-14]=42316:149
48+5000:(28:a+6)-14=284
5000:(28:a+6)=284-34
5000:(28:a+6)=250
28:a+6=5000:250
28:a+6=20
28:a=20-6
28:a=14
a=28:14
a=2
[48+50×100:(28:a+3×2)-14]×[(50-4×5)+(143-4×6)]=42316
[48+5000:(28:a+6)-14]×(30+119)=42316
[48:5000:(28:a+6)-14]×149=42316
48+5000:(28:a+6)-14=42316:149=284
48+5000:(28:a+6)=284+14=298
5000:(28:a+6)=298-48=250
28:a+6=5000:250=20
28:a=20-6=14
a=28:14=2

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