Niveau 3eme maths ex 29 page 94 Resoudre chaque equation : -3 + x = 7 5x = 19 3x + 7x = 50 x + 8 =.... Pergunta de ideia demelineeee

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Niveau 3eme maths ex 29 page 94 Resoudre chaque equation :
-3 + x = 7
5x = 19
3x + 7x = 50
x + 8 = 11
-2x = 9
-4x + 9x =45
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