Vektor- kap1

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1.
1 point
(-4)-(-4)
2.
1 point
-18+8
_________=
-2
3.
1 point
7-(-6)
4.
1 point
(-9).(-7)
5.
1 point
-5+18
6.
1 point
5.(-6)
7.
1 point
(-6)-15
8.
1 point
(-3)-(-3).(5)
9.
1 point
-8.(-3)
_______=
-2
10.
1 point
40 - (-5).(-7)
11.
1 point
(-3).(-3).(-5)
12.
1 point
-8-9