Aflati valoarea fiecarei litera 194×3+200-a=493
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(104×4+83×5)-a×3=8×100+36:9=
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Răspuns :

582+200-a=493
782-a=493 =>a=782-493 =>a=289

(416+415)-ax3=800+4
831-ax3=804
ax3=831-804
ax3=27 =>a=9