Question

Punctul d va rog e pentru luni

Answer 1

[tex]d)\frac{2014}{53}-\frac{2013}{53}+\frac{2012}{53}-\frac{2011}{53}+_{\dots}+\frac{4}{53}-\frac{3}{53}+\frac{2}{53}-\frac{1}{53}=\\ =\frac{(2014-2013)+(2012-2011)+_{\dots}+(4-3)+(2-1)}{53}=\\ ~~~~~~~de\ 1007\ ori\\ \frac{\overbrace{1+1+1+_{\dots}+1}}{53}=\frac{1007}{53}=\boxed{19}\\ [/tex]