Lettervormen distributiviteit

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Bereken

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

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Bereken

Verbetersleutel

1. \(-(-2a-2b-4)=2a+2b+4\)
2. \(-(-p-q+4)=p+q-4\)
3. \(-3(7x-2)=-21x+6\)
4. \(-(-8y+1)=8y-1\)
5. \(+(-p-4q+1)=-p-4q+1\)
6. \(-2(-2a+4b+3)=4a-8b-6\)
7. \(-2(-x-3xy+4)=2x+6xy-8\)
8. \(+(-2x+4xy-1)=-2x+4xy-1\)
9. \(-(xy-3y+2)=-xy+3y-2\)
10. \(4(8p+1)=32p+4\)
11. \(-(-7x+1)=7x-1\)
12. \(-2(3x-4xy-4)=-6x+8xy+8\)