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a fost răspuns

afla numerele necunoscute :145 ×3+a=424 ×5 b-412 ×3=216×4

Răspuns :

Iamale47
145×3+a=424×5 <=> 435+a=2120 <=> a=2120-435 <=> a=1685. b-412×3=216×4 <=> b-1236=864 <=> b=864+1236 <=> b=2100.

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