Question

resolver las siguientes operaciones con números racionales es urgente por favor​

Answer 1

Respuesta:

a=$\frac{-2}{11}+\frac{-9}{11} =\frac{-11}{11}=-1$  

b=$\frac{17}{5} + \frac{-19}{5}= -\frac{2}{5}$    

c=$\frac{-4}{6} +\frac{7}{8} + \frac{-4x8+6x7}{6x8} =\frac{-32+42}{48} =\frac{10}{48}=\frac{5}{24}$

d= $\frac{-5}{8} -\frac{11}{20} + \frac{-5x20-8x11}{8x20} =\frac{-100-88}{160} = -\frac{188}{160}=-\frac{47}{40}$

e=$\frac{9}{15} - \frac{-7}{12} = \frac{9x12-(-7x15)}{15x12}= \frac{108+105}{180}= \frac{213}{180}=\frac{71}{60}$

f=$\frac{7}{5} x \frac{-8}{6} =\frac{-56}{30}=-\frac{28}{15}$

g=$\frac{13}{6} x \frac{4}{11} =\frac{52}{66}=\frac{26}{33}$

h=$\frac{-10}{8} x\frac{-12}{20} = \frac{120}{160} =\frac{3}{4}$

i=$\frac{15}{16} x \frac{-20}{5}=\frac{-300}{80} =-\frac{30}{8}$

Explicación paso a paso: