Question

помогите пожалуйста решить 3 задание

Answer 1

Ответ:

Пошаговое объяснение:

а) = 4 2/6 + 1/6 = 4 3/6 =

4 1/2

б) = 4 5/5 - 2 2/5 = 2 3/5

в) = 17/8 * (-2) = - 34/8 = -4 2/8 = - 4 1/4

г) = 10/3 * (-1/5) = - 10/15 = -2/3

д) = -2 5/10 + 8/10 = -25/10 + 8/10 = - 17/10 =

-1 7/10

е) = - 3 4/4 = - 4

ж) = 15/4 * (-2/15) = -2/4 =

- 1/2

з) = -9/4 * (-10/27) = -1/2 * (-5/3) = 5/6

и) = 0

Answer 2

Ответ:

Пошаговое объяснение:

а) 4 1/3 + 1/6 = 13/3 + 1/6 = 2 · 13/2 · 3 + 1/6 = 26/6 + 1/6 = 27/6 = 4 1/2.

б) 5 - 2 2/5 = 4 5/5 - 2 2/5 = (4 - 2) + (5/5 - 2/5) = 2 3/5.

в) 2 1/8 · (-2) = 17/8 · (-2/1) = -34/8 = -17/4 = -4 1/4.

г) 3 1/3 : (-5) = 10/3 : (-5/1) = 10/3 · (-1/5) = -10/15 = -2/3.

д) -2 1/2 + 4/5 = -5/2 + 4/5 = -25/10 + 8/10 = -17/10 = -1 7/10.

е) -1 3/4 - 2 1/4 = -7/4 - 9/4 = -16/4 = -4.

ж) 3 3/4 · (-2/15) = 15/4 · (-2/15) = - 30/60 = -1/2.

з) -2 1/4 : (-2 7/10) = -9/4 : (-27/10) = -9/4 · (-10/27) = 90/108 = 5/6.

и) -1 2/7 · 0 = 0.