Question

es sobre los numeros racionales ​

Answer 1

Respuesta:

espero que les sirva

Explicación paso a paso:

a) $\frac{-5}{2}+\frac{12}{2} = \frac{-5+12}{2} = \frac{-7}{2}$

b)$\frac{-6}{5} +(-\frac{4}{5} )=\frac{-6-4}{5} =\frac{-10}{5} =-2$

c)$\frac{-14}{5} -2=\frac{-14-2*5}{5} =\frac{-14-10}{5} =\frac{-24}{5}$

d)$\frac{-7}{3} +(-\frac{3}{6})=\frac{-7*6-3*3}{3*6} =\frac{-42-9}{18}= \frac{-51}{18} =\frac{-17}{6}$

e)$\frac{-5}{7} -(-\frac{9}{2} )=\frac{-5}{7} +\frac{9}{2} =\frac{-5*2+7*9}{2*7} =\frac{-10+63}{14} =\frac{53}{14}$

$f) \frac{-3}{5} +\frac{7}{4} +\frac{2}{6} =\frac{-3*4+5*7}{5*4} +\frac{2}{6} =\frac{-12+35}{20} +\frac{2}{6} =\frac{23}{20} +\frac{2}{6} =\frac{23*6+20*2}{20*6} =\frac{138+40}{120} =\frac{178}{120} =\frac{89}{60}$