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cat face 7,(8)-3,4(5)

Răspuns :

7,(8)-3,4(5)=71/9-311/90=(710-311)/90=399/90=4,4(3)

7,(8)=(78-7)/9=71/9

3,4(5)=(345-34)/90=311/90
 7,(8)-3,4(5) = 4, 3(5)
Sper ca te-am ajutat !