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calculați: 5/7+0,(81)+9•(5-4•1/8)

Răspuns :

5/7 +81/99 +9(5- 1/2)=

=5/7 +9/11 +9(9/2)=

=5/7 +9/11 +81/2=

=(110+126+6237)/154=

=6473/154=42 si rest 5