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[(358+254):9+16]×100:[(178+542):12]=

Răspuns :

(612:9+16)x100:(720:12)=
(68+16)x100:60=
84x100:60=
8400:60=
140
(612÷9+16)×100÷(720÷12)
(68+16)×100÷60
 84×100÷60
8400÷60
140 coroana te rog