Question

ayuda tengo que entregar hoy ​

Answer 1

Respuesta:

aaaaaaaaa

no se

voy a pensarlo

Answer 2

Respuesta:

a)- $\frac{2}{5} -\frac{7}{2}=\frac{4-31}{10} =-\frac{31}{10}$

b)-$\frac{-10}{3} +\frac{1}{4} =\frac{-40+3}{12} =-\frac{37}{12}$

c)$(\frac{-4}{5} )+(\frac{-7}{10} )=\frac{-4}{5}+\frac{-7}{10} =\frac{-16-7}{10} =\frac{-23}{10} =-\frac{23}{10}$

d)$\frac{-4}{6} -\frac{5}{8} =\frac{-32-30}{48} =-\frac{62}{48} =-\frac{31}{24}$

e)$(\frac{-2}{7}) .\frac{8}{9} =-\frac{16}{63}$

f)$\frac{-3}{4}$÷($\frac{-11}{5}$)=$\frac{\frac{-3}{4} }{\frac{-11}{5} }=\frac{-15}{-44} =\frac{15}{44}$

g)-$(\frac{-4}{5}) .(\frac{-4}{5}) =\frac{16}{25}$

h)-($\frac{7}{10}$÷$\frac{9}{13}$=$\frac{\frac{7}{10} }{\frac{9}{10} }=\frac{91}{90}$

Resuelve primero cada  parentesis

$A)(\frac{1}{2} -\frac{3}{4} ).(\frac{-2}{3} )^{2} =(\frac{4-6}{8} ).\frac{4}{9} =\frac{-2}{8}.\frac{4}{9} =\frac{-1}{4} .\frac{4}{9} =\frac{-1}{9}$

B)$(\frac{-4}{5} -\frac{1}{5} )/(\frac{-2}{7}+\frac{1}{10}) =(\frac{-4-1}{5} )/(\frac{-20+7}{70} )=-\frac{5}{5} /\frac{-13}{70} =-1/\frac{-13}{70} =13/70$