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Liczby dodatnie i liczby ujemne - dodawanie i od ...
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0,1 - 1 =
-0,9
Oops!
Okay!
-2,7 + (-3,6) =
-6,3
Oops!
Okay!
-1,7 + 0,9 =
-0,8
Oops!
Okay!
18 + (-21) =
-3
Oops!
Okay!
-8 - 2,5 =
-10,5
Oops!
Okay!
-11 - 9 =
-20
Oops!
Okay!
(-3) + (-2) =
-5
Oops!
Okay!
7 + (-11) =
-4
Oops!
Okay!
3 + (-2) =
1
Oops!
Okay!
-7 - (-5) =
-2
Oops!
Okay!
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