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borishaifa [10]
3 years ago
15

(+9)+(-9)=(+1)+(-8)=(+3)+(-12)=(-23)+(-12)=(+35)+(-20)=(+50)+(-22)=

Mathematics
2 answers:
Anna11 [10]3 years ago
8 0
1. 0
2. -7
3. -9
4.11
5. 15
6. 28
fgiga [73]3 years ago
4 0
1. 0
2. -7
3. -8
4. -35
5. 15
6. 28
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