Mettre en équation 1

Voici un problème :

Laure, Théo et Romane se sont partagés 315 euros. Laure a pris 20 euros de plus que Théo et Romane en a 26 de moins que Théo. Combien chacun a-t-il pris ?

Soit x la quantité d'argent prise par Théo. Quelle équation doit vérifier x ?

This is exercise number 1 in a series of 5 exercises.
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