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- \(-9+6=\)
- \(8-9=\)
- \(-9+4=\)
- \(-12-2=\)
- \(-5+8=\)
- \(-3+6=\)
- \(4-7=\)
- \(7-9=\)
- \(-9-2=\)
- \(-12-3=\)
- \(-10-7=\)
- \(8-11=\)
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Verbetersleutel
- \(-9+6=-3\)
- \(8-9=-1\)
- \(-9+4=-5\)
- \(-12-2=-14\)
- \(-5+8=3\)
- \(-3+6=3\)
- \(4-7=-3\)
- \(7-9=-2\)
- \(-9-2=-11\)
- \(-12-3=-15\)
- \(-10-7=-17\)
- \(8-11=-3\)