Question

Efectuati:
a).$(-\frac{1}{3}) ori (-\frac{7}{4}) : (\frac{-15}{-3}) : (-\frac{7}{12}+ =$

b). $-\frac{3}{4} - (\frac{1}{2} - \frac{1}{3} + \frac{5}{6}) - \left[-1,1(6)} + \frac{2}{3}] =$

c). (-2$\frac{1}{2} : (-2,5) - [-3+( -\frac{1}{14} ) : ( -\frac{5}{7} )] : 0,01 =$

d). ($(-\frac{5}{7} )ori \frac{14}{19} : \frac{75}{76} ori (-3) ² - [(-3) ²] ³ ori \frac{1}{81} + ( -\frac{7}{5}) ² ori ( -\frac{7}{5}) ² : ( -\frac{7}{5}) ⁴ =$

Answer 1

a) $( \frac{-1}{3} )*( \frac{-7}{4} ):( \frac{-15}{-3} ): (\frac{-7}{12} )= \frac{7}{12}* \frac{1}{5}*( \frac{-12}{7} )= \frac{-84}{420}= \frac{-1}{5}$
b)$-\frac{3}{4}-\frac{3-2+5}{6} - \frac {7}{6}+\frac{2}{3}=\frac{-9-12-14+8}{12}=\frac{-27}{12}=\frac{-9}{4}$
c)$\frac{-5}{2}* \frac{2}{-5}-[-3+(\frac{-1}{14})*\frac{7}{-5}]:\frac{1}{100}=1-(\frac{-30}{10}+\frac{1}{10})*100=1-290$
d) scuze, dar nu se chair intelege ce ai scris:(