Oblicz:
a) 2,7: 9- 1=
b) 3- (-3)=
c) 2,4 x ( 57- 77)=
d) 13- 7 x 9=
e) 0,3- 0,25 x 8=
f) ( 4,5- 2,5 x 2 )=
a) 2,7: 9- 1=0,3-1=-0,7
b) 3- (-3)=3+27=30
c) 2,4 x ( 57- 77)=2,4*(-20)=-48
d) 13- 7 x 9=13-63=-50
e) 0,3- 0,25 x 8=0,3-2=-1,7
f) ( 4,5- 2,5 x 2 )=(4,5-5)²=(0,5)²=0,25
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a) 2,7: 9- 1=0,3-1=-0,7
b) 3- (-3)=3+27=30
c) 2,4 x ( 57- 77)=2,4*(-20)=-48
d) 13- 7 x 9=13-63=-50
e) 0,3- 0,25 x 8=0,3-2=-1,7
f) ( 4,5- 2,5 x 2 )=(4,5-5)²=(0,5)²=0,25