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Secondary II • 3mo.

J'arrive pas a calculer cela:

x + x/3 + 14 + x + x/3 + 14 = 52

Mathematics
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Explanations (1)

  • Explanation from Alloprof

    Explanation from Alloprof

    This Explanation was submitted by a member of the Alloprof team.

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    Team Alloprof • 3mo. edited January 8

    Salut :D

    Mets d'abord les x sur le même dénominateur.

    On aura :

    $$\frac{3x}{3} + \frac{x}{3} + 14 + \frac{3x}{3} + \frac{x}{3} + 14 = 52$$.

    Ensuite, on simplifie en additionnant les fractions.

    $$\frac{8x}{3} + 14 + 14 = 52$$

    On isole ensuite le x.

    $$\frac{8x}{3} = 52 - 28$$

    $$\frac{8x}{3} = 24$$

    $$8x = 3*24$$

    $$8x = 72$$

    $$x = \frac{72}{8}$$

    $$x = 9$$

    N'hésite pas si tu as d'autres questions :D À bientôt :)

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