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(3x9+0:10):9+9:(0:5+5x2:10)=

Răspuns :

(27+0)/9+9/(0+1)=
27/9+9/1=
3+9=
12
(3×9+0:10):9+9:(0:5+5×2:10)=(27+0):9+9:(0+10:10) =27:9+9:(0+1) =3+9:1 3+9 =12