1. - Oblicz najprostszym sposobem:
a) -5 x (-5)9: (-5)8 =
b) (-3)7: (-3)6 x (-3) =
c) (0,7) x (13/7) - (1,6) : (0,8) =
d) (0,9) x (11/9) - (1,2) : (11/5) =
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a) -5 * (-5)9: (-5)8 =
25*9-40=
225
b) (-3)7: (-3)6 * (-3) =
(-21): (-18)*(-3)=
-1134
c) (0,7) * (13/7) - (1,6) : (0,8) =
1,3-2=
0,7
d) (0,9) * (11/9) - (1,2) : (11/5) =
1,1 - (12/10 * 5/11)=
1,1-6/11=
11/10 - 6/11 =
121/110 - 60/110=
181/110~1,7