Haakjesregel (intermezzo)

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Werk de haakjes weg

1. \(-(-8)+(-6)=\)
2. \(-(-3)+(+3)=\)
3. \(-(+1)+(-7)=\)
4. \(-(+7)-(-8)=\)
5. \(-(-5)-(+5)=\)
6. \(-(+1)-(-4)=\)
7. \(-(-5)+(+1)=\)
8. \(-5-(-3)=\)
9. \(-(+2)+(-7)=\)
10. \(-(+3)-(-8)=\)
11. \(-12-(-5)=\)
12. \(-(+5)-(-12)=\)

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Werk de haakjes weg

Verbetersleutel

1. \(-(-8)+(-6)=8-6\)
2. \(-(-3)+(+3)=3+3\)
3. \(-(+1)+(-7)=-1-7\)
4. \(-(+7)-(-8)=-7+8\)
5. \(-(-5)-(+5)=5-5\)
6. \(-(+1)-(-4)=-1+4\)
7. \(-(-5)+(+1)=+5+1\)
8. \(-5-(-3)=-5+3\)
9. \(-(+2)+(-7)=-2-7\)
10. \(-(+3)-(-8)=-3+8\)
11. \(-12-(-5)=-12+5\)
12. \(-(+5)-(-12)=-5+12\)