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Bitu123145
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5 supra 11•[2-1,(4)]+(5supra 28):11supra14

Răspuns :

[tex] \frac{5}{11} \times[ (2 - 1.(4)] + \frac{5}{28} \div \frac{11}{14} [/tex]

[tex] = \frac{5}{11} \times (2 - \frac{14 - 1}{9} ) + \frac{5}{28} \times \frac{14}{11} [/tex]

[tex] = \frac{5}{11} \times (2 - \frac{13}{9} ) + \frac{5 \times 14}{28 \times 11} [/tex]

[tex] = \frac{5 \times 2}{11} - \frac{5 \times 13}{11 \times 9} + \frac{70}{308} [/tex]

[tex] = \frac{10}{11} - \frac{65}{99} + \frac{70}{308} [/tex]

[tex] = \frac{10}{11} - \frac{65}{99} + \frac{35}{154} [/tex]

[tex] = \frac{9 \times 10}{9 \times 11} - \frac{65}{99} + \frac{35}{154} [/tex]

[tex] = \frac{90}{99} - \frac{65}{99} + \frac{35}{154} [/tex]

[tex] = \frac{90 - 65}{99} + \frac{35}{154} [/tex]

[tex] = \frac{25}{99} + \frac{35}{154} [/tex]

[tex] = \frac{25 \times 154}{99 \times 154} + \frac{35 \times 99}{154 \times 99} [/tex]

[tex] = \frac{3850}{15246} + \frac{3465}{15246} [/tex]

[tex] = \frac{3850 + 3465}{15246} [/tex]

[tex] = \frac{7315}{15246} [/tex]