Lettervormen distributiviteit

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Bereken

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

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Bereken

Verbetersleutel

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