(5 supra 6+11 supra 9):74 supra 9 ! Va rog! Repede!

Răspuns :

(5/6+11/9):74/9=(5x3+11x2)/18:74/9=(15+22)/18:74/9=37/18+74/9=(37+74x2)/18=(37+144)/18=181/18