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a)4
-17
-15
13
34
-21
1
-254
9.
a) 30-12=18
18-23=-5
-18-23=-41
b)30-(-12)=42
-23+(-18)=-31
-12 - 30=-42
c)23-18=5
-30-12=-42
12-30=-18
d)
-12-(-30)=18
12-(-30)=42
-30-(-12)=-18
a. 4
-17
-15
13
34
-21
1
-254
9)
a.18
-5
-41
b. 42
-42
-42
c.5
-42
-18
d.18
42
18
mam nadzieje że sie nie pomyliłam :)
a)-(-4)=4
b)+(-17)=-17
c)-(+15)=-15
d)-(-13)=13
e)-(-34)=34
f)-(+21)=-21
g)-(-1)=1
h)+(-254)=-254
zad 9
a) 30 - 12=18
18 - 23=-5
-18 - 23=-41
b) 30 - (-12)=30+12=42
-23 + (-18)=-23-18=-41
-12 - 30=-42
c)
23 - 18=15
-30 - 12=-42
12 - 30=-18
d)
-12 - (-30)=-12+30=18
12 - (-30)=12+30=42
-30 - (-12)=-30+12=-18