Question

Виконати дії:
2⅗+1⅙=
4¾-2½=
3½-4⅔=
-3½×7=
4½:(-3½)=
5-2½=
7:(-⅖)=
0:(-8½)=
-6½-6½=
13-9 4/9=
Пожалуйста помогите!!!​

Answer 1

Ответ:

$2 \frac{3}{5} + 1 \frac{1}{6} = 2 \frac{18}{30} + 1 \frac{5}{30} = 3 \frac{23}{30} \\ 4 \frac{3}{4} - 2 \frac{1}{2} =4 \frac{3}{4} - 2 \frac{2}{4} = 2 \frac{1}{4} \\ 3 \frac{1}{2} - 4 \frac{2}{3} =3 \frac{3}{6} - 4 \frac{4}{6} = - 1 \frac{1}{6} \\ - 3 \frac{1}{2} \times 7 = - \frac{7}{2} \times 7 = - \frac{49}{2} = - 24.5 \\ 4 \frac{1 }{2} \div ( - 3 \frac{1}{2} ) = \frac{9}{2} \times ( - \frac{2}{7} ) = - \frac{9}{7} = - 1 \frac{2}{7} \\ 5 - 2 \frac{1}{2} =5 - 2.5 = 2.5 \\ 7 \div ( - \frac{2}{5} ) = - \frac{7 \times 5}{2} = - 12.5 \\ 0 \div ( - 8 \frac{1}{2} ) = 0 \\ - 6 \frac{1}{2} - 6 \frac{1}{2} = - 13\\ 13 - 9 \frac{4}{9} = 12 \frac{9}{9} - 9 \frac{4}{9} = 3 \frac{5}{9}$