Question

czesc , poomozcie prosze .

oblicz :

(2/3 + 1/4 ) : 1 5/6

(5 1/2 - 3 1/4) : 2 1/4

(2 1/2 - 1 7/8 ) : 1/8

8: ( -1 3/5)

Answer 1

a) (2/3 + 1/4) : 1 5/6 = (8/12 + 3/12) : 11/6 = 11/12 * 6/11 = 1/2

b) (5 1/2 - 3 1/4) : 2 1/4 = (22/4 - 13/4) : 9/4 = 9/4 * 4/9 = 1

c) (2 1/2 - 1 7/8) : 1/8 = (5/2 - 15/8) : 1/8 = (20/8 - 15/8)*8 = 5/8 * 8/1 = 5

d) 8: (-1 3/5) = 8: (-8/5) = 8*(-5/8) = -5

 

 

 

 

 

 

 

Answer 2

a) (2/3+1/4): 1 5/6 = (8/12+3/12): 11/6 = 11/12*6/12=1/2
b) (5 1/2 - 3 1/4) : 2 1/4 = ( 5 2/4 - 3 1/4):9/4= 9/4*4/9=1
c) (2 1/2 - 1 7/8 ) : 1/8 = ( 5/2-15/8)*8/1 = (20/8-15/8)*8/1= 5/8*8/1=5
d) 8: ( -1 3/5) = 1/8* ( -8/5)= -1/5

liczę na naj :)