Integer Operations

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1.
3+6=___
2.
5-1=___
3.
3-4=___
4.
-2+5=___
5.
-6+8=___
6.
9+(-4)=___
7.
10+(-2)=___
8.
-1-5=___
9.
7+(-7)=___
10.
3-10=___
11.
1+(-11)=___
12.
12-1=___
13.
-10+22=___
14.
15 +(-2)=___
15.
-6+20=___