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Scrieti rezultatel sub forma de fractie zecimala
A) (1/2)3:0, (6)+1:[1:0.3 (6)-1/2]


Răspuns :

a) (1/2)×3:0,(6)+1:[1:0.3 (6)-1/2]=
= (1/2)×3:2/3+1:[1:(36-3)/90-1/2]=
= (1/2)×3×3/2+1:[1:33/90-1/2]=
= 9/4+1:[1×30/11-1/2]=
= 9/4+1:(30/11-1/2)=
= 9/4+1:(60-11)/22=
= 9/4+1×22/49=
= 9/4+22/49=
=(9×49+22×4)/(4×49)=
=(441+88)/196=
=529/196=2,698979591......