Bonjour a tous exercice 15 page 81 en maths 4eme
(petit x egal la lettre et l'etoile(*)egal la multiplication)
Exercice d'equation ( resoudre chaque equation )
a) x+5=25
b)6+y=-5
c)-6+a=7
d)t-12=-7
Merci d'avance
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