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cine stie???plz dau coroana

Cine Stieplz Dau Coroana class=

Răspuns :

1/12-5×2/12=-9/12 -13×2/8+2×8/8+5/8=-19/8
2int 1/4+3int1/2=9/4+7/2=9/4+14/4=23/4=5,75
7/18+1int 1/81=7/18+82/81=126/324+328/324=454/324=1,4012
1/12-5/6=1/12-10/12=-9/12=-3/4=-0,75
7/10-1/2+3/5=7/10-5/10+6/10=8/10=4/5=0,8