Question

пж помогите срочно!​

Answer 1

а)

$\frac{5}{9} + ( - \frac{7}{9} ) = \frac{5}{9} - \frac{7}{9} = \frac{5 -7 }{9} = - \frac{2}{9}$

b)

$\frac{ - 10}{19} + \frac{5}{19} = - \frac{10}{19} + \frac{5}{19} = \frac{5 - 10}{19} = - \frac{5}{19}$

c)

$\frac{ - 12}{23} + ( \frac{ - 11}{23} ) = - \frac{12}{23} - \frac{11}{23} = \frac{ - 12 - 11}{23} = - \frac{23}{23} = - 1$

d)

$\frac{16}{37} + \frac{11}{37} = \frac{16 + 11}{37} = \frac{27}{37}$