Răspuns:
Explicație pas cu pas:
2. -200÷10=-20
3.-22+(+15)=-22+15=-7
4.-100-(+100)=-100-100=-200
5.-(-7)+20=+7+20=27
6.-10-5=-15
7.-4+14=10
8.-6-7-20=-33 si 6+7-20=13-20=-7
9.(-4)÷(-1)=4
10.-4÷-2=2
11.-8÷-1÷-2=8÷-2=-4
12. 12÷3÷-4=4÷-4=-1
13. -36÷4=-9
14.-2-2=-4
15.-6-(+9)=-6-9=-15
16.-7-2=-9
17.-6+(-14)=-6-14=-20
18.27-4=23