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Dau coroana!!!please

Dau Coroanaplease class=

Răspuns :

(1+1întreg si6/9-2/9+16/3): 1 întreg si(16-1)/90=

(9/9+15/9-2/9+48/9):105/90=

70/9×90/105=2×10/3=20/3