Question

спасибо за помощь (заранее) ​

Answer 1

Ответ:

1.    -2  1/2

2.   -4 1/2

3.    -6 1/5

Пошаговое объяснение:

2  1/3 + (-4 5/6) = 7/3 - 29/6 = (7*2 - 29)/6 = (14-29)/6 = -15/6 = -2 3/6 = -2  1/2

1  1/12 + (-5 1/6) = 13/12 - 31/6 = (13-31*2)/12 = (13-62)/12 = -49/12 = -4 1/12

3 2/15 + (-9 1/3) = 47/15 - 28/3 = (47-28*5)/15 = (47-140)/15 = -93/15 = -6 3/15 = -6 1/5

Answer 2

Пошаговое объяснение:

7)

$2 \frac{1}{3} + ( - 4 \frac{5}{6}) = 2 \frac{2}{6} - 4 \frac{5}{6} = 1 \frac{8}{6} - 4 \frac{5}{6} = - 3 \frac{1}{2}$

8)

$1 \frac{1}{12} + ( - 5 \frac{1}{6}) = 1 \frac{1}{12} - 5 \frac{2}{12} = \frac{13}{12} - 5 \frac{2}{12} = - 5 \frac{11}{12}$

9)

$3 \frac{2}{15} + ( - 9 \frac{1}{3} ) = 3 \frac{2}{15} - 9 \frac{5}{15} = 2 \frac{17}{15} - 9 \frac{5}{15} = - 7 \frac{4}{5}$