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Ligning med den ubekendte i nævneren

Den variable x er i nævneren i ligningen 7 - 10/x = 2 + 15/x. Vi kan gange på begge sider af ligningen med x for at lave den om til en mere velkendt og lineær form uden brøker. Dernæst kan vi isolere den variable og løse ligningen. P.S. x kan ikke være lig nul, da ligningen så ikke er defineret. Lavet af Sal Khan.

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