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9+7×3-42:6-54:9+68:4

Răspuns :

9+7×3-42:6-54:9+68:4
=9+21-7-6+17
=30-7+11
=23+11
=34;
9+21-7-6+17
=30-13+17
=17+17
=34

Sper că te am ajutat