Haakjesregel (intermezzo)

Hoofdmenu Eentje per keer  🖨

Werk de haakjes weg

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

---

Werk de haakjes weg

Verbetersleutel

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