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Adriana500
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2(03)+1,5-0,(6)-0,8(63) = ?
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Răspuns :

Renatemambouko
2,(03)=(203-2)/99=201/99=67/33
1,5=15/10=3/2
0,(6)=6/9=2/3
0,8(63)=(863-8)/990=855/990=19/22
2,(03)+1,5-0,(6)-0,8(63) =67/33+3/2-2/3-19/22= (67×2+3×33-2×22-19×3)/66=
=(134+99-44-57)/66=132/66=2
Alexandravert
2,(03)=2 întregi 3/99=2 întregi 1/33=67/33 1,5=15/10=3/2 0,(6)=6/9=2/3 0,8(63)=(863-8)/990=855/990=171/198=19/22 61/30+3/2-2/3-18/22 2=2*1 3=3*1 33=11*3 N.C=2*3*11=66 67/33+3/2-2/3-19/22= =(134+99-44-57)/66= =132/66= =2

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