Question

Токо 1 и 6 ОЧЕНЬ СРОЧНО

Answer 1

Ответ:

Пошаговое объяснение:

1.

8х / 1 1/7 = 4 2/3 / 5/12

8х = 1 1/7 * 4 2/3 / 5/12

8х = 8/7 * 14/3 / 5/12

8х = 16/3 / 5/12

8х = 16/3 * 12/5

8х = 64/5

х = 64/5 : 8

х = 64/5 * 1/8

х = 8/5

х = 1 3/5

6.

а) -12,3 + 1,23 = -11,07

б) -1 1/4 - 6,5 = -1 1/4 - 6 5/10 = -1 1/4 - 6 1/2 = -1 1/4 - 6 2/4 = -7 3/4

в) -2 1/3 + 5 1/7 = -2 7/21 + 5 3/21 = -2 7/21 + 4 24/21 = 2 17/21