Question

Допоможіть будь ласка

Answer 1

1.

3 3/23 23/27 72/23 23/27 (81)/(13) = 8/3 = 2 2/3

2) 11/5* 1/6 = 6/5*1/6 = 1/5

3) 14 7/15-2 2/3=14 7/15-2 10/15 13 22/15-2 4) 11 4/5 1/5 = 11 3/5

10/1511 12/15 = 11 4/5

2.

(5 8/9:1 17/36+ 1 1/4) *5/21-1 1/4 1) 5 8/9: 117/36=53/9:53/36-53/9* 36/53=4 2) 4+1 1/4 5 1/4 3) 5 1/4* 5/21 21/4*5/21= 5/4 1 1/4

3.

(-3,25-2,75):(-0,6)+0,8*(-7)=4,4 -3,25-2,75=-(3,25+2,75)=-6

-6:(-0,6)-10

0,8*(-7)=-5,6 10+(-5,6)=10-5,6-4,4

4.

(-1 3/8 - 25/12): 55/12 = - 7/10

1) -13/8-2 5/12 (19/24 +2 10/24)=-3 19/24 2)-319/24:5 5/12-91/24: 65/12-91/24* 12/65=-(7*1)/(2*5)=-7/10

Answer 2

Ответ:

на фото

Объяснение: