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Teori

Multiplikation i olikheter

Multiplicerar man ena ledet av en olikhet med en faktor måste man multiplicera det andra ledet med samma faktor. I nedanstående exempel multiplicerar vi 3 i båda led i olikheten vilket gör att vänsterledet kan förenklas till x:
Men, om man multiplicerar med ett negativt tal måste man vända olikhetstecknet för att olikheten ska stämma.

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