Question

Exprimati sub forma de fractii oedinare ireductubile :80%= ,2,85% = , 6,(5)%= 2,1(3)%= va rog cu explicați. ​

Answer 1

80%=80/100=8/10=4/5=0,8(fractie ordinară)

2,85%=2,85/100=0,0285

6,(5)%=65-6/9/100=59/9/100=59/9•1/100=5900/9==655,(5)=6,(5)

2,1(3)%=213-21/90/100=192/90/100=96/45:100=

= 96/45•1/100=96/9•1/20=96/180=48/90=24/45=8/15=0,5(3)