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a fost răspuns

Calculati
a) 4/9+11/3+7/18
b)125/49:25/14-1*1/7
c) (2/3)^43:(2/3)^39:(2/3)^2+(7/3)^2

Răspuns :

Bibi1600
(8+66+7):18=81:18=9:2=4.5
125:49•14:25-1:7=5:7•2-1:7=(10-1):7=9:7
(2:3) la puterea 43-39-2 +(7:3)²=(2:3)²+(7:3)²=(4+49):9=53:9

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