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Calculeaza:
(2supra3+4supra5):7supra15=
(5supra16+4supra18):7supra36=
(2supra15-1supra30):8supra45=

Transforma in fractie ordinara ireductibila:
21,4=
0.75=
3,125=
10,12=
Transformati in fractie ordinara ireductibila:0.2(3)=
1.3(5)
0.22(4)
14.5(2)
1.2(4)
0.(23)
0.1(25)
4.(18)
Calculeaza:1.2+1.(5):0(7)=
(7supra6+3supra4)×24=