Question

$( \frac{ 16}{17} ) + \frac{14}{17} + \frac{15}{17} + ( - \frac{6}{17} ) \:$
дам 25 баллов
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Answer 1

$\bigg(\dfrac{16}{17}\bigg)+\dfrac{14}{17}+\dfrac{15}{17}+\bigg(-\dfrac6{17}\bigg)=\\\\\\=\dfrac{16+14+15-6}{17}=\dfrac{39}{17}=\\\\\\=\dfrac{34+5}{17}=\dfrac{34}{17}+\dfrac5{17}\boldsymbol{=2\dfrac 5{17}}$