Lettervormen distributiviteit

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Bereken

1. \(-(-y-1)\)
2. \(2(5a-1)\)
3. \(-4(4y-1)\)
4. \(4(-8y-1)\)
5. \(3(-5a-2)\)
6. \(+(5b-1)\)
7. \(+(2a+4b-3)\)
8. \(-2(3x-y+2)\)
9. \(+(p-3q+2)\)
10. \(-2(a-2)\)
11. \(-(x-3y-4)\)
12. \(-2(7y-1)\)

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Bereken

Verbetersleutel

1. \(-(-y-1)=y+1\)
2. \(2(5a-1)=10a-2\)
3. \(-4(4y-1)=-16y+4\)
4. \(4(-8y-1)=-32y-4\)
5. \(3(-5a-2)=-15a-6\)
6. \(+(5b-1)=5b-1\)
7. \(+(2a+4b-3)=2a+4b-3\)
8. \(-2(3x-y+2)=-6x+2y-4\)
9. \(+(p-3q+2)=p-3q+2\)
10. \(-2(a-2)=-2a+4\)
11. \(-(x-3y-4)=-x+3y+4\)
12. \(-2(7y-1)=-14y+2\)