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{40 minus C impartit la 3}×2≈68. DAU COROANA!

Răspuns :

(40-C:3)×2=68 (40-C:3)=68:2 40-C:3=34 C:3=34+40 C:3=74 C=74:3 C=2,4(6)
(40-c:3)x 2= 68 (40-c:3) =68 : 2  40-c:3=34 c:3=34+40 c : 3 = 74 c=74:3 c=2,4(6)