Question

a)17/18-1/5:1 i 3/5
b)17/40-3/5: 1 I 1/3 X 3/10
c)(3/4+7/9)x(2 i 3/3 - 1/3)

prosze o pomoc

Answer 1

a)16/8

b)- 23/200

c)4 i 2/27

 

 

Answer 2

a)17/18 - 1/5 : 1 i 3/5 = 
= 17/18 - 1/5 : 8/5 =

= 17/18 - 1/5 * 5/8 = 
= 17/18 - 1/8 =
= 68/72 - 9/72 = 
= 59/72
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b)17/40 - 3/5 : 1 I 1/3 x 3/10 =

= 17/40 - 3/5 : 4/3 x 3/10 = 
= 17/40 - 3/5 : 2/5 = 
= 17/40 - 3/5 * 5/2 = 
= 17/40 - 3/2 = 
= 17/40 - 60/40 =

= -43/40 = 
= -1 i 3/40
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c) (3/4 + 7/9) x (2 i 3/3 - 1/3) = 
= ( 27/36 + 28/36) x (3 - 1/3) = 
= 55/36 x 2 i 2/3 = 
= 55/36 x 8/3 = 
= 110/27 = 
= 4 i 2/27

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