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(28+18)*13 supra 2


Răspuns :

(28+18)*13 supra 2 = 598 supra 2 = 299
(28+18) ×13/2=
=46 ×13/2=
=46/1 × 13/2=
=23×13 tot ăsta supra/1×2=
=299/2


(28+18)×13 tot asta supra /2=
=46×13 tot asta supra/2=
=598/2 =
=299