Haakjesregel (intermezzo)

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Werk de haakjes weg

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

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Werk de haakjes weg

Verbetersleutel

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