Question

De la ex 3 doar a si b ! Cine le face complet si corect primeste coronita va rog repede !

Answer 1

$[\frac{5}{8}*(-2)+2,5]: (\frac{-1}{2})^2 = (\frac{-5}{4}+ \frac{25}{10}): \frac{1}{4} = (\frac{-5}{4}+ \frac{5}{2}): \frac{1}{4} =(\frac{-5}{4}+ \frac{10}{4}): \frac{1}{4}  = \frac{5}{4} :\frac{1}{4} = \frac{5}{4} *4 = 5\\\\b)[2,(3)-1\frac{2}{5} ] : (-7) +1,(6) = (\frac{23-2}{9}- \frac{1*5+2}{5}):(-7)+ \frac{16-1}{9}= (\frac{21}{9} -  \frac{7}{5}):(-7)+ \frac{15}{9} =(\frac{7}{3}- \frac{7}{5} ):(-7) +  \frac{5}{3} = (\frac{35-21}{15} ):(-7) + \frac{5}{3} = \frac{14}{15} *\frac{-1}{7} +[tex]= \frac{-2}{15}+ \frac{5}{3} = \frac{-2+25}{15} =  \frac{23}{15}$ =[/tex]