Question

Ayuda lo necesito urgentemente xfa ​

Answer 1

Respuesta:

1.a.

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

b.

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

c.

$\frac{ - 4}{6} + \frac{7}{8} = \frac{ - 32 + 42}{48} = \frac{10}{48}$

d.

$\frac{ - 5}{8} - \frac{11}{20} = \frac{ - 100 - 88}{160} = \frac{ - 188}{160}$

e.

$\frac{9}{15} - \frac{ - 7}{12} = \frac{108 - ( - 105)}{180} = \frac{213}{180}$

f.

$\frac{7}{5} \times \frac{ - 8}{6} = \frac{ - 56}{30}$

g.

$\frac{13}{6} \times \frac{4}{11} = \frac{52}{66}$

h.

$\frac{ - 10}{8} \times \frac{ - 12}{20} = \frac{120}{160}$

i.

$\frac{15}{16} \times \frac{ - 20}{5} = \frac{ - 300}{80}$

j.

$\frac{20}{12} \div \frac{25}{30} = \frac{600}{300}$