Haakjesregel (intermezzo)

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Werk de haakjes weg

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

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Werk de haakjes weg

Verbetersleutel

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