Question

Rozwiąż ( łącznie z obliczeniami ) :

a) ( 3,75 + 1 i 3/8 ) : 2 =

b) -1,6 : 1 i 11/15 + 1 i 3/14 =

c) ( 0,3 + 4/5 ) : ( 6 i 1/15 - 2/3 ) =

d) 2 i 2/5 + ( 0,3 - 3,1 ) x2 - 0,44 : (-2) =

Answer 1

a) ( 3,75 + 1 i 3/8 ) : 2 =(3 i 3/4+1 i 3/8):2=(15/4+11/8)*1/2=(30/8+11/8)*1/2=

41/8*1/2=41/16=2 i 9/16

 

 

b) -1,6 : 1 i 11/15 + 1 i 3/14 =-16/10*15/26+17/14=-24/26+17/14=

-336/364+442/364=106/364=53/182=0,291208791

 

 

c) ( 0,3 + 4/5 ) : ( 6 i 1/15 - 2/3 ) =(3/10+8/10):(91/15-10/15)=11/10*15/81=

33/162=11/54=0,203703703

 

 

 

d) 2 i 2/5 + ( 0,3 - 3,1 ) x2 - 0,44 : (-2) =12/5-5,6+0,22=240/100-560/100+22/100=

-298/100=-2,98