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9,(6)+2,5-3,8(3)=?
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Răspuns :

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Vezi imaginea 102533
9,(6)+2,5-3,8(3) =

(96 - 9)/9 + 25/10 - (383 - 38)/90 =

87/9 + 25/10 - 345/90 =

(87×10)/90 + (25×9)/90 - 345/90 =

870/90 + 225/90 - 345/90 =

1095/90 - 345/90 =

750/90 =

75/9 =

8,(3)