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a fost răspuns

(9/2+5/2-1)-(1/4+3/4+5)=

Răspuns :

(9\2+5\2-2\2)-(1\4+3\4+20\4)=
12\2-24\4=
24\4-24\4=0
(9/2+5/2-1)-(1/4+3/4+5)=
( (9+5)/2 -1)-( (1+3)/4+5)=
(14/2-1)-(4/4+5)=(7-1)-(1+5)=6-6=0