Haakjesregel (intermezzo)

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Werk de haakjes weg

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

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Werk de haakjes weg

Verbetersleutel

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