Question

номер 1007 все номера

Answer 1

здравствуйте.

$1) : - 1 frac{3}{5} + ( - 2 frac{5}{6} ) = - 1 frac{18}{30} - 2 frac{25}{30} = - 3 frac{43}{30} = - 4 frac{13}{30}$
$2) : - 5 frac{7}{15} + ( - 8 frac{3}{10} ) = - 5 frac{14}{30} - 8 frac{9}{30} = - 13frac{23}{30}$
$3) : - 4 frac{9}{14} + ( - 2 frac{4}{21} ) = - 4 frac{27}{42} - 2 frac{8}{42} = - 6 frac{35}{42} = - 6 frac{5}{6}$
$4) : - 0.85 + ( - 4 frac{1}{2} ) = - 0.85 - 4.5 = - 5.35$
$5) : - 4 frac{3}{10} + ( - 1.2) = - 4.3 - 1.2 = - 5.5$
$6) : - 5.15 + ( - 2 frac{1}{4} ) = - 5.15 - 2.25 = - 7.4$

удачи.

Answer 2

спасибо большое