Question

7) -12:(-6/7) 8)-3/4:(-5) 9)-1 8/27:(-1 5/9)

Answer 1

Ответ:

- 12:(-6/7)=-12*(-7/6)=14

-3/4:(-5)=-3/4*(-1/5)=3/20

-1 8/27:(-1 5/9) =-35/27*(-9/14)=5/6

Answer 2

7) 12×7/6

сокращаем

и получается 2×7=14

Ответ:14

8) 3/4×1/5=3/20

Ответ: 3/20 или 0,15

9) 18/27×9/15

сокращаем

6/3×1/5

2×1/5=2/5

Ответ: 2/5 или 0,4

Answer 3

To solve each of these expressions, follow the order of operations (PEMDAS/BODMAS):

1. -12:(-6/7) Divide -12 by (-6/7): -12 ÷ (-6/7) = 14

2. -3/4:(-5) Divide -3/4 by -5: (-3/4) ÷ (-5) = 3/20 or 0.15

3. -1 8/27:(-1 5/9) Convert both mixed numbers to improper fractions: -1 8/27 = -35/27 -1 5/9 = -14/9

   Divide -35/27 by -14/9: (-35/27) ÷ (-14/9) = 5/6 or 0.8333 (rounded to four decimal places)

So, the results are:

1. -12:(-6/7) = 14
2. -3/4:(-5) = 0.15
3. -1 8/27:(-1 5/9) = 5/6 or 0.8333