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Daniel399
a fost răspuns

[60×100:(7×2+3×2)-j]:[40-5×2)-4×7)]=143​

Răspuns :

Bigbrain48

Răspuns:

[6000:(14+6)-j]:[(40-10)-28]=143

(6000:20-j):(30-28)=143

(300-j):2=143

300-j=143×2

300-j=286

j=14

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