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9×9-27+3×3×3=
(25-19)×7=


Răspuns :

9x9-27+3x3x3=81-27+27=54+27=81
(25-19)x7= 6x7=42
9×9-27+3×3×3=81-27+27=81 

(25-19)×7=6 
× 7=42