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15+(-5+7)-(-9+3)= (-24):(7-12+6-5)=

Răspuns :

15+(-5+7)-(-9+3)=15+2+6=24; (-24):(7-12+6-5)=(-24):(-4)=6;
1.
1)-5+7=2
2)2+12=14
3)15+14=29

2.
1)7-12=-5
2)6-5=1
3)-5+1=-4
4)-24: (-4)=6

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