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0, (5)+0,125(7)÷1,2-0,175 calculați rotunjind la doua zecimale exacte<br /> dau coroana

Răspuns :

0, (5)+0,125(7)÷1,2-0,175 =
=5/9+(1257-125)/9000 :1/2-175/1000=
=5/9+1132/4500 -7/40=
=5/9+283/1125 -7/40=
=(5000+2264-1575)/9000=5689/9000=0,632(1) 

rotunjit 0,63