Question

Proszę o pomoc w tych czterech przykładach..potrzebuje ich na dziś

a) 1 1/9+(-2 3/8)=

b) (-5 1/3-1 1/9)·27=

c) -2,5·(-2 1/5-3 1/7)=

d) 1/3:(2 1/3-1 /16)=

e) 1-(1- 1/5)=

Answer 1

a) 1 1/9-2 3/8=10/9-19/8=80/72-171/72=-99/72

b)(-16/3-10/9)*27=(-48/9-10/9)*27=-58/9*27=-58*3=-174

c)-5/2*(-11/5-22/7)=-5/2*(-77/35-110/35)=-5/2*-187/35=187/14

d)1/3:(7/3-1/16)=1/3:(112/48-3/48)=1/3:109/48=1/3*48/109=16/109

e)1-(1-1/5)=1-4/5=1/5

Answer 2

a) 1i1/9+(-2i3/8)= 1i8/72 -2i27/72= -1i19/72

 

b) (-5i1/3-1i1/9) *27= (-5i3/9 -1i1/9)*27= -6i4/9 *27= -58/9 *27= -58/1*3= -174

 

c) -2,5*(-2i1/5 -3i1/7)= -2,5*(-2i7/35-3i5/35)=-2,5 *(-5i12/35)=-2i1/2 *(-187/35)=

      = -5/2 * (-187/35) = -1/2 *(-187/7)= 187/14= 13i5/14

 

d) 1/3: (2i1/3 -1/16)= 1/3 : (2i16/48 - 3/48)= 1/3: 2i13/48= 1/3:109/48=

      = 1/3 * 48/109 = 1/1 *16/109 = 16/109

 

e) 1 -(1 -1/5) = 1 -(5/5 -1/5= 1-(4/5)= 5/5 - 4/5 = 1/5