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5 OЫicz.
а) -13 + 11 =
-21 + 11 =
-8 + 11 =
b) -20 + (-5) =
-15 +(-5) =
12+(-5) =
-7+(-5) =
3+(-5) =
45 +(-5) =
-3 + 11 =
-19 + 11 =
-30 + 11 =


Odpowiedź :

Odpowiedź:

a)

-2

-10

3

b)

-20

7

-13

-2

40

8

-8

-19

Pozdrawiam serdecznie JT

[tex]a) -13+11=-2\\-21+11=-10\\-8+11=3\\[/tex]

[tex]b) -20+(-5)= -25\\-15+(-5)=-20\\12+(-5)=7\\-7+(-5)=-12\\3+(-5)=-2\\45+(-5)=40\\-3+11=8\\-19+11=-8\\-30+11=-19[/tex]