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Ligningssystemer med substitutionsmetoden: y = 4x - 17,5 og y + 2x = 6,5

Lær at løse ligningssystemet y = 4x - 17,5 og y + 2x = 6,5 ved hjælp af substitutionsmetoden. Lavet af Sal Khan og Montereys Institut for teknologi og undervisning.

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