Lettervormen distributiviteit

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Bereken

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

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Bereken

Verbetersleutel

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