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calculați 7,(15)+2,(18)-15,23)+11,(20)​

Răspuns :

[tex] \frac{715 - 7}{99} + \frac{218 - 2}{99} - \frac{523 - 5 }{99} + \frac{1120 - 11}{99} = [/tex]

[tex] \frac{715 - 7 + 218 - 2 - 523 - 5 + 1120 - 11}{99} = [/tex]

[tex] \frac{1515}{99} = [/tex]

[tex] \frac{505}{33} [/tex]